分解因式x的平方 4x-y的平方 4
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原式=-y(4x²-4xy+y²)=-y(2x-y)²
(x+y)^2-(x-y)^2={(x+y)+(x-y)}{(x+y)-(x-y)}=2x*2y=4xy
4(x+2y)²-9(x-y)²=[2(x+2y)]²-[3(x-y)]²=[2(x+2y)+3(x-y)][2(x+2y)-3(x-y)]=(5x+y)(-x
xy(x-y)-x(x-y)平方=(x-y)[xy-x(x-y)]=(x-y)[2xy-x^2]=(x-y)*x(2x-y)-a平方+1.9b平方=(b根号1.9+a)(b根号1.9-a)-12xy+
4xy的平方-4x的平方y-y的三次方=y(4xy-4x^2-y^2)=-y(4x^2-4xy+y^2)=-y(2x-y)^2
3x的4次方+x的平方y-2y的平方=(x²+y)(3x²-2y)很高兴为您解答,【the1900】团队为您答题.请点击下面的【选为满意回答】按钮,再问:有过程吗,如果是一步的话有
1x²+2xy-3y²=x²+2xy+y²-4y²=(x+y)²-(2y)²=(x+y+2y)(x+y-2y)=(x+3y)(x-
(2x+3y)^2-4x^2=3y(4x+3y)
把x+y当做一个因子,7当做一个因子(x+y)^2-14(x+y)+49=(x+y)^2-2*7*(x+y)+7^2=(x+y-7)^2
题目有问题吧,我感觉应该是(x²+y²-z²)²-4x²y²(x²+y²-z²)²-4x²
=(x^2-4)^2-y^2=(x^2-4+y)(x^2-4-y)
原式=(a²+b²+2ab)(a²+b²-2ab)=(a+b)²(a-b)²原式=a²(x-y)-b²(x-y)=(x-
=[(x+y)-2y]²=(x-y)²
x²-4y²=x²-(2y)²=(x+2y)(x-2y)这里用到了平方差公式.很高兴为您解答,祝你学习进步!如果我的回答对你有帮助,请及时选为满意答案,谢谢~~
4(x-y)^3-8x(y-x)^2=4(y-x)^2(x-y-2x)=4(y-x)^2(-x-y)=-4(y-x)^2(x+y)秋风燕燕为您解答有什么不明白可以继续问,随时在线等.
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(x+2)(x+4)+x²-4=(x+2)(x+4)+(x-2)(x+2)=(x+2)(x+4+x-2)=(x+2)(2x+2)=2(x+1)(x+2)
(x^2+4y^2)^2-16x^2y^2=(x+4y)-(4xy)=(x+4y+4xy)(x+4y-4xy)=(x+2y)(x-2y)请采纳回答
(x+y)的平方-6x的平方+6y的平方+9(x-y)的平方=(x+y)²-6(x²-y²)+9(x-y)²=(x+y)²-6(x+y)(x-y)+9