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1，九年級上冊數學
2，九上數學重點題型有哪些急在線等搜
3，九年級上冊數學
4，九年級上冊數學
5，九年級數學上下冊各學什么內容
6，九年級上冊數學計算題一天內啊速度420道左右必須有答案過程可以

1，九年級上冊數學

0加0等于0 當根號下9-x為0時，那么它的平方也就是9-x的絕對值就是0所以（x+2y)就是0

九年級上冊數學

2，九上數學重點題型有哪些急在線等搜

容易考應用題，特別是增長率和減少率的問題以及一些與面積有關的應用題。

你好！反比例函數一元二次方程如有疑問，請追問。

九上數學重點題型有哪些急在線等搜

3，九年級上冊數學

√500=√20×25=5√20=5√4×5=5×2√5=10√5

短除法500，就有500=2*2*5*5*5，所以根號500=100倍根號5

10倍的根號5啊

九年級上冊數學

4，九年級上冊數學

回答，你的認為是對的。打開后AB的長度就是底面圓的周長的一半母線就是高的意思正確的答案是根號下 4+ π的平方

這個答案明顯錯誤!打開后的AB=周長的一半=π(派),BC=2所以小蟲爬行長度為根號下4+π的平方

答案錯了.母線為AD BC 呵呵這是規定的

5，九年級數學上下冊各學什么內容

上冊：二次函數，概率，圓，相似三角形，解三角形。下冊：直線與圓的位置關系，三視圖

上冊：第一單元：二次根式第二單元：一元二次方程第三單元：旋轉第四單元：圓第五單元：概率初步下冊：第一單元：二次函數第二單元：相似第三單元：銳角三角函數第四單元：投影與視圖具體的看這里： http://www.pep.com.cn/czsx/jszx/jnjsc/dzkb/ http://www.pep.com.cn/czsx/jszx/jnjxc/dzkb/

6，九年級上冊數學計算題一天內啊速度420道左右必須有答案過程可以

(1)x^2-9x+8=0 答案：x1=8 x2=1 (2)x^2+6x-27=0 答案：x1=3 x2=-9 (3)x^2-2x-80=0 答案：x1=-8 x2=10 (4)x^2+10x-200=0 答案：x1=-20 x2=10 (5)x^2-20x+96=0 答案：x1=12 x2=8 (6)x^2+23x+76=0 答案：x1=-19 x2=-4 (7)x^2-25x+154=0 答案：x1=14 x2=11 (8)x^2-12x-108=0 答案：x1=-6 x2=18 (9)x^2+4x-252=0 答案：x1=14 x2=-18 (10)x^2-11x-102=0 答案：x1=17 x2=-6 (11)x^2+15x-54=0 答案：x1=-18 x2=3 (12)x^2+11x+18=0 答案：x1=-2 x2=-9 (13)x^2-9x+20=0 答案：x1=4 x2=5 (14)x^2+19x+90=0 答案：x1=-10 x2=-9 (15)x^2-25x+156=0 答案：x1=13 x2=12 (16)x^2-22x+57=0 答案：x1=3 x2=19 (17)x^2-5x-176=0 答案：x1=16 x2=-11 (18)x^2-26x+133=0 答案：x1=7 x2=19 (19)x^2+10x-11=0 答案：x1=-11 x2=1 (20)x^2-3x-304=0 答案：x1=-16 x2=19 (21)x^2+13x-140=0 答案：x1=7 x2=-20 (22)x^2+13x-48=0 答案：x1=3 x2=-16 (23)x^2+5x-176=0 答案：x1=-16 x2=11 (24)x^2+28x+171=0 答案：x1=-9 x2=-19 (25)x^2+14x+45=0 答案：x1=-9 x2=-5 (26)x^2-9x-136=0 答案：x1=-8 x2=17 (27)x^2-15x-76=0 答案：x1=19 x2=-4 (28)x^2+23x+126=0 答案：x1=-9 x2=-14 (29)x^2+9x-70=0 答案：x1=-14 x2=5 (30)x^2-1x-56=0 答案：x1=8 x2=-7 (31)x^2+7x-60=0 答案：x1=5 x2=-12 (32)x^2+10x-39=0 答案：x1=-13 x2=3 (33)x^2+19x+34=0 答案：x1=-17 x2=-2 (34)x^2-6x-160=0 答案：x1=16 x2=-10 (35)x^2-6x-55=0 答案：x1=11 x2=-5 (36)x^2-7x-144=0 答案：x1=-9 x2=16 (37)x^2+20x+51=0 答案：x1=-3 x2=-17 (38)x^2-9x+14=0 答案：x1=2 x2=7 (39)x^2-29x+208=0 答案：x1=16 x2=13 (40)x^2+19x-20=0 答案：x1=-20 x2=1 (41)x^2-13x-48=0 答案：x1=16 x2=-3 (42)x^2+10x+24=0 答案：x1=-6 x2=-4 (43)x^2+28x+180=0 答案：x1=-10 x2=-18 (44)x^2-8x-209=0 答案：x1=-11 x2=19 (45)x^2+23x+90=0 答案：x1=-18 x2=-5 (46)x^2+7x+6=0 答案：x1=-6 x2=-1 (47)x^2+16x+28=0 答案：x1=-14 x2=-2 (48)x^2+5x-50=0 答案：x1=-10 x2=5 (49)x^2+13x-14=0 答案：x1=1 x2=-14 (50)x^2-23x+102=0 答案：x1=17 x2=6 (51)x^2+5x-176=0 答案：x1=-16 x2=11 (52)x^2-8x-20=0 答案：x1=-2 x2=10 (53)x^2-16x+39=0 答案：x1=3 x2=13 (54)x^2+32x+240=0 答案：x1=-20 x2=-12 (55)x^2+34x+288=0 答案：x1=-18 x2=-16 (56)x^2+22x+105=0 答案：x1=-7 x2=-15 (57)x^2+19x-20=0 答案：x1=-20 x2=1 (58)x^2-7x+6=0 答案：x1=6 x2=1 (59)x^2+4x-221=0 答案：x1=13 x2=-17 (60)x^2+6x-91=0 答案：x1=-13 x2=7

1)x^2-9x+8=0 答案：x1=8 x2=1 (2)x^2+6x-27=0 答案：x1=3 x2=-9 (3)x^2-2x-80=0 答案：x1=-8 x2=10 (4)x^2+10x-200=0 答案：x1=-20 x2=10 (5)x^2-20x+96=0 答案：x1=12 x2=8 (6)x^2+23x+76=0 答案：x1=-19 x2=-4 (7)x^2-25x+154=0 答案：x1=14 x2=11 (8)x^2-12x-108=0 答案：x1=-6 x2=18 (9)x^2+4x-252=0 答案：x1=14 x2=-18 (10)x^2-11x-102=0 答案：x1=17 x2=-6 (11)x^2+15x-54=0 答案：x1=-18 x2=3 (12)x^2+11x+18=0 答案：x1=-2 x2=-9 (13)x^2-9x+20=0 答案：x1=4 x2=5 (14)x^2+19x+90=0 答案：x1=-10 x2=-9 (15)x^2-25x+156=0 答案：x1=13 x2=12 (16)x^2-22x+57=0 答案：x1=3 x2=19 (17)x^2-5x-176=0 答案：x1=16 x2=-11 (18)x^2-26x+133=0 答案：x1=7 x2=19 (19)x^2+10x-11=0 答案：x1=-11 x2=1 (20)x^2-3x-304=0 答案：x1=-16 x2=19 (21)x^2+13x-140=0 答案：x1=7 x2=-20 (22)x^2+13x-48=0 答案：x1=3 x2=-16 (23)x^2+5x-176=0 答案：x1=-16 x2=11 (24)x^2+28x+171=0 答案：x1=-9 x2=-19 (25)x^2+14x+45=0 答案：x1=-9 x2=-5 (26)x^2-9x-136=0 答案：x1=-8 x2=17 (27)x^2-15x-76=0 答案：x1=19 x2=-4 (28)x^2+23x+126=0 答案：x1=-9 x2=-14 (29)x^2+9x-70=0 答案：x1=-14 x2=5 (30)x^2-1x-56=0 答案：x1=8 x2=-7 (31)x^2+7x-60=0 答案：x1=5 x2=-12 (32)x^2+10x-39=0 答案：x1=-13 x2=3 (33)x^2+19x+34=0 答案：x1=-17 x2=-2 (34)x^2-6x-160=0 答案：x1=16 x2=-10 (35)x^2-6x-55=0 答案：x1=11 x2=-5 (36)x^2-7x-144=0 答案：x1=-9 x2=16 (37)x^2+20x+51=0 答案：x1=-3 x2=-17 (38)x^2-9x+14=0 答案：x1=2 x2=7 (39)x^2-29x+208=0 答案：x1=16 x2=13 (40)x^2+19x-20=0 答案：x1=-20 x2=1 (41)x^2-13x-48=0 答案：x1=16 x2=-3 (42)x^2+10x+24=0 答案：x1=-6 x2=-4 (43)x^2+28x+180=0 答案：x1=-10 x2=-18 (44)x^2-8x-209=0 答案：x1=-11 x2=19 (45)x^2+23x+90=0 答案：x1=-18 x2=-5 (46)x^2+7x+6=0 答案：x1=-6 x2=-1 (47)x^2+16x+28=0 答案：x1=-14 x2=-2 (48)x^2+5x-50=0 答案：x1=-10 x2=5 (49)x^2+13x-14=0 答案：x1=1 x2=-14 (50)x^2-23x+102=0 答案：x1=17 x2=6 (51)x^2+5x-176=0 答案：x1=-16 x2=11 (52)x^2-8x-20=0 答案：x1=-2 x2=10 (53)x^2-16x+39=0 答案：x1=3 x2=13 (54)x^2+32x+240=0 答案：x1=-20 x2=-12 (55)x^2+34x+288=0 答案：x1=-18 x2=-16 (56)x^2+22x+105=0 答案：x1=-7 x2=-15 (57)x^2+19x-20=0 答案：x1=-20 x2=1 (58)x^2-7x+6=0 答案：x1=6 x2=1 (59)x^2+4x-221=0 答案：x1=13 x2=-17 (60)x^2+6x-91=0 答案：x1=-13 x2=7 (61)x^2+8x+12=0 答案：x1=-2 x2=-6 (62)x^2+7x-120=0 答案：x1=-15 x2=8 (63)x^2-18x+17=0 答案：x1=17 x2=1 (64)x^2+7x-170=0 答案：x1=-17 x2=10 (65)x^2+6x+8=0 答案：x1=-4 x2=-2 (66)x^2+13x+12=0 答案：x1=-1 x2=-12 (67)x^2+24x+119=0 答案：x1=-7 x2=-17 (68)x^2+11x-42=0 答案：x1=3 x2=-14 (69)x^20x-289=0 答案：x1=17 x2=-17 (70)x^2+13x+30=0 答案：x1=-3 x2=-10 (71)x^2-24x+140=0 答案：x1=14 x2=10 (72)x^2+4x-60=0 答案：x1=-10 x2=6 (73)x^2+27x+170=0 答案：x1=-10 x2=-17 (74)x^2+27x+152=0 答案：x1=-19 x2=-8 (75)x^2-2x-99=0 答案：x1=11 x2=-9 (76)x^2+12x+11=0 答案：x1=-11 x2=-1 (77)x^2+17x+70=0 答案：x1=-10 x2=-7 (78)x^2+20x+19=0 答案：x1=-19 x2=-1 (79)x^2-2x-168=0 答案：x1=-12 x2=14 (80)x^2-13x+30=0 答案：x1=3 x2=10 (81)x^2-10x-119=0 答案：x1=17 x2=-7 (82)x^2+16x-17=0 答案：x1=1 x2=-17 (83)x^2-1x-20=0 答案：x1=5 x2=-4 (84)x^2-2x-288=0 答案：x1=18 x2=-16 (85)x^2-20x+64=0 答案：x1=16 x2=4 (86)x^2+22x+105=0 答案：x1=-7 x2=-15 (87)x^2+13x+12=0 答案：x1=-1 x2=-12 (88)x^2-4x-285=0 答案：x1=19 x2=-15 (89)x^2+26x+133=0 答案：x1=-19 x2=-7 (90)x^2-17x+16=0 答案：x1=1 x2=16 (91)x^2+3x-4=0 答案：x1=1 x2=-4 (92)x^2-14x+48=0 答案：x1=6 x2=8 (93)x^2-12x-133=0 答案：x1=19 x2=-7 (94)x^2+5x+4=0 答案：x1=-1 x2=-4 (95)x^2+6x-91=0 答案：x1=7 x2=-13 (96)x^2+3x-4=0 答案：x1=-4 x2=1 (97)x^2-13x+12=0 答案：x1=12 x2=1 (98)x^2+7x-44=0 答案：x1=-11 x2=4 (99)x^2-6x-7=0 答案：x1=-1 x2=7 (100)x^2-9x-90=0 答案：x1=15 x2=-6 (101)x^2+17x+72=0 答案：x1=-8 x2=-9 (102)x^2+13x-14=0 答案：x1=-14 x2=1 (103)x^2+9x-36=0 答案：x1=-12 x2=3 (104)x^2-9x-90=0 答案：x1=-6 x2=15 (105)x^2+14x+13=0 答案：x1=-1 x2=-13 (106)x^2-16x+63=0 答案：x1=7 x2=9 (107)x^2-15x+44=0 答案：x1=4 x2=11 (108)x^2+2x-168=0 答案：x1=-14 x2=12 (109)x^2-6x-216=0 答案：x1=-12 x2=18 (110)x^2-6x-55=0 答案：x1=11 x2=-5 (111)x^2+18x+32=0 答案：x1=-2 x2=-16 求采納

設分成的較長的一條線段的長為x，另一段為20-x 則折成的正方形的邊長分別為x/4,(20-x)/4 已知這兩個正方形的面積的差為20平方厘米由題意得 (x/4)^2-[(20-x)/4]^2=20 x^2-(400-40x+x^2)=20*4^2 x^2-(400-40x+x^2)=720 40x=720 x=18厘米另一段為20-18=2厘米 x=