X^2(4A^2-9B^2)+Y^2(9B^2-4A^2)
因式分解:x^2y^2-4x a(a-b)-2b(b-a)
(x+y)(a-2b)
几道因式分解..4ab(a+b)^2-6a^2b(a+b)(x+y)^2(x-y)+(x+y)(x-y)^22a(a-3
a+2a= 8b-b= y+9y= x+7x-4x=
(x-A)*(B-y)=x^2-9xy+8y^2,求A,B
A.A+(4X+3Y)B.A+(4X+6Y) C.A+2(
同底数幂乘方(a-b)^5*(a-b)^10*(b-a)(a-2b)^2*(a-2b)*4*(a-b)(x-3y)^2*
多项式分解因式:1,x^2-25x 2,x(a+b)+y(a+b) 3,1-9y^2 4,4a^2-12a+9
计算:1、(2a-3b)(2a+3b)(-4a²-9b²) 2、(x-2y+3)(x+2y-3)
整式计算(1)3a[(b^2)-3a(b-3a)]+b[(9a^2)-3ab+(b^2)](2)[(4x-1/2·y)(
①[(x+y)^2-(x+y)(x-y)]/2y②(-1/3a^3b^2)^2(-2ab^2)^3/(1/9a^4b^4
下列计算:①(a²-b²)/(a-b)=a-b;②2y/3x÷(-4y²/9x³