因式分解,十分钟内我要答案,全对的加30分
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因式分解,十分钟内我要答案,全对的加30分
[1]x^3y^2-3x^2yz
[2]9b^2-a^2
[3]2x^2-8x+8
[4]x^3y+xy
[5]4x^2-25
[6]x^2-10x+25
[7]若m的平方-n的平方=6,且m-n=2,则m+n=
[8]14x^3+8ax-4x
[9](x-2)(x-4)+1
[10]l利用因式分解计算
(2分之11)^2-2乘以2分之11乘以2分之1+2分之1的平方
[1]x^3y^2-3x^2yz
[2]9b^2-a^2
[3]2x^2-8x+8
[4]x^3y+xy
[5]4x^2-25
[6]x^2-10x+25
[7]若m的平方-n的平方=6,且m-n=2,则m+n=
[8]14x^3+8ax-4x
[9](x-2)(x-4)+1
[10]l利用因式分解计算
(2分之11)^2-2乘以2分之11乘以2分之1+2分之1的平方
![因式分解,十分钟内我要答案,全对的加30分](/uploads/image/z/15039853-61-3.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%2C%E5%8D%81%E5%88%86%E9%92%9F%E5%86%85%E6%88%91%E8%A6%81%E7%AD%94%E6%A1%88%2C%E5%85%A8%E5%AF%B9%E7%9A%84%E5%8A%A030%E5%88%86)
1 = x^2 * y *(xy-3 * z)
2 =(3b+a)(3b-a)
3 = 2*(x-2)*(x-2)
4 = xy(x^2 +1)
5=(2x+5)(2x-5)
6=(x-5)*(x-5)
7 m2-n2 = (m+n)(m-n) = 6
m-n = 2
m+n = 3
8 = 2x * (7*x*x + 4*a - 2)
9 = x2 - 6x + 8 + 1 = x2 - 6x + 9 =(x-3)(x-3)
10 2分之11 = 5.5
2分之1 = 0.5
原石 = 5.5*5.5 - 2 * 5.5 * 0.5 + 0.5 * 0.5
= (5.5 - 0.5)(5.5 - 0.5) = 25
2 =(3b+a)(3b-a)
3 = 2*(x-2)*(x-2)
4 = xy(x^2 +1)
5=(2x+5)(2x-5)
6=(x-5)*(x-5)
7 m2-n2 = (m+n)(m-n) = 6
m-n = 2
m+n = 3
8 = 2x * (7*x*x + 4*a - 2)
9 = x2 - 6x + 8 + 1 = x2 - 6x + 9 =(x-3)(x-3)
10 2分之11 = 5.5
2分之1 = 0.5
原石 = 5.5*5.5 - 2 * 5.5 * 0.5 + 0.5 * 0.5
= (5.5 - 0.5)(5.5 - 0.5) = 25