因式分解:9a的平方(x-y) (y-x)-搜答案-智慧作业帮

a的平方(x-y)+b的平方(y-x)=(x-y)(a²－b²）=(x-y)(a+b)(a-b)(x的平方-2y)的平方-(1-2y)的平方=(x-2y+1-2y)(x-2y-1+

(x+y)^2-6x^2+6y^2+9(x-y)^2=x^2+2xy+y^2-6x^2+6y^2+9x^2-18xy+9y^2=4x^2-16xy+16y^2=4(x^2-4xy+4y^2)=4(x-

9y的4次方-6y平方+1-a平方乘以x平方=(3y^2-1)^2-(ax)^2=(3y^2-1-ax)(3y^2-1+ax)

36-x平方=(6-x)(6+x)四分之一Y平方+Y+1=(2分之一Y+1)²,2MN-M平方-N平方=-(m-n)²,9-十六分之一A平方=(3-4分之一a)(3+4分之一a)

原式=a²(x-y)²+2a(x-y)³+(x-y)^4=(x-y)²[a²+2a(x-y)+(x-y)²]=(x-y)²[a+(

用平方差公式4x的平方-9y的平方=(2x)的平方-(3y)的平方=(2x+3y)(2x-3y)

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

（1）原式=(X+Y)(X-Y)-4(X-Y)=(X-Y)(X+Y-4)(2)原式=(3a-3b)^2-(x-y)^2=(3a-3b+x-y)(3a-3b-x+y)

9x²-4y²=(3x)²-(2y)²=(3x-2y)(3x+2y)

4-12(x-y)+9(x-y)²=[2－3﹙x－y﹚]²=﹙2－3x＋3y﹚²再问：那个小的2是怎么弄的再答：二次方，就是平方

(x+y)²-6x(x+y)+9x²=(x+y)²-2×(x+y)×3x+(3x)²运用完全平方公式=[(x+y)-3x]²=(x+y-3x)

3a(x-y)-2(y-x)^2=3a(x-y)-2(x-y)^2=(x-y)[3a-2(x-y)]=(x-y)(3a-2x+2y)

1、原式=(x-y)[(x-y)²-4(x-y)+4]=(x-y)[(x-y)-2]²=(x-y)(x-y-2)²2、原式=(6a)²-(a²+9)&

4a²-(b+c)²=[2a+(b+c)][2a-(b+c)]=(2a+b+c)(2a-b-c)-4(x-2y)²+9(x+y)²=9(x+y)²-4

3a(x-y)+9(y-x)=3(x-y)(a-3)x^2+y^2-1-2xy=(x-y)^2-1=(x-y+1)(x-y-1)(x+2)(x+6)+x^2-4=(x+2)(x+6)+(x+2)(x-

再答：采纳我的好吗？再答：采纳吧再问：哦

a的平方（x-y）+4b的平方（y-x）=a的平方（x-y）-4b的平方（x-y）=(x-y)(a^2-4b^2)=(x-y)(a+2b)(a-2b)

3a²x²y²-27a²=3a²（x²y²-9）=3a²（xy-3）(xy+3)

(x+y)²-(9y)²=(x+y+3y)(x+y-3y)=(x=4y)(x-2y)(x+y)²-(9y)³=(x+y)²-(729y³)=

9(x-y)的平方+3x-3y=9(x-y)的平方+3(x-y)=3(x-y)[3(x-y)+1]=3(x-y)(3x-3y+1)