分解x^2-4x 4-4y^2等于多少-搜答案-百度作业网

x²-4y²+x-2y=(x²-4y²)+(x-2y)=(x-2y)(x+2y)+(x-2y)=(x-2y)(x+2y+1)很高兴为您解答,祝你学习进步!【学习

（1-x^2)(1-y^2)+4xy=1-x²-y²+x²y²+4xy=（x²y²+2xy+1）-（x²-2xy+y²）

9(x-y)^2+12(x^2-y^2)+4(x+y)^2=[3(x-y)]^2+2*3(x-y)*2(x+y)+[2(x+y)]^2=[3(x-y)+2(x+y)]^2=(5x-y)^2

原式=(x²-y²)²=(x+y)²(x-y)²

x^2-x-4y^2+2y=(x^2-4y^2)-(x-2y)=(x+2y)(x-2y)-(x-2y)=(x-2y)(x+2y-1)

一式无法分解二式(x+1)*(x^2+x+1)*(x^2-x+1)三式无法分解

（2x4-4x3y-x2y2）-2（x4-2x3y-y3）+x2y2=2x4-4x3y-x2y2-2x4+4x3y+2y3+x2y2=2y3，因为化简的结果中不含x，所以原式的值与x值无关．

是不是这样的题目4x^3-4x^2y-(x-y)=(4x^2-1)x-(4x^2-1)y=(4x^2-1)(x-y)=(2x+1)(2x-1)(x-y）

x^4-5x²+4=x^4-4x²+4-x²=(x²-2)²-x²=(x²-x-2)(x²+x-2)=(x-2)(x+1

=[2（a-b)]^2-(x-y)^2=(2a-2b+x-y)（2a-2b-x+y)

1.(2)(x5+2)(x5-1)1.(4)2.(1)(x+2)2(x-1)满难的其他解不出唉

(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)=x^2-4y^2-x^2+16y^2+36xy-30y^2-30x^2+25xy=-18y^2+61xy-30x^2

x^4-y^4+4x^2+4（分组分解法）=(x^4+4x^2+4)-y^4=(x^2+2)^2-y^4（公式法）=(x^2+2+y^2+2)(x^2-y^2+2)(公式法)4x^2-12xy-c^2

(x+y)^4+(x+y)^2-20＝[﹙x＋y﹚²＋5﹚][﹙x＋y﹚²－4]＝﹙x²＋2xy＋y²＋5﹚﹙x＋y－2﹚﹙x＋y＋2﹚

-27x^3+8=2^3-(3x)^3=(2-3x)(4+6x+9x^2)(x^2-5x+2)(x^2-5x+4)-24=(x^2-5x)^2+6(x^2-5x)+8-24=(x^2-5x)^2+6(

原式=(x-2y)(3x+4y)+2(x-2y)(2x-3y)=(x-2y)(3x+4y+4x-6y)=(x-2y)(7x-2y)

用提取公因式法,提取（x+3y)原式=（x+3y)[(3x-4y)-(x-2y)]=(x+3y)(2x-2y)=2(x+3y)(x-y)

后面的数字是次方?这样子输入很容易错误.加我Q慢慢帮你解答.

4x^4y^2-5x^2y^2-9y^2=y^2(4x^4-5x^2-9)=y^2(4x^2-9)(x^2+1)=y^2(2x-3)(2x+3)(x^2+1)