4+12(x-y)+9(x-y)^2等于多少?
1个回答
4+12(x-y)+9(x-y)^2
=2^2+2*2*3(x-y)+[3(x-y)]^2
=(2+3x-3y)^2
相关问题
4+12(x-y)+9(x-y)^2等于多少
4+12(x-y)+9 (x-y)²等于多少
9x^4+12x^2y^2+4y^4 9-12(x+y)+4(x+y)^2 x^2+2x(y+z)+(y+z)^2 36
9-12(x-y)+4(x-y)^2
4+12(x-y)+9(x-y)^2
4(x+y)^2-12(x+y)+9
9(x-y)^2-12(x-y)+4 (x^2+y^2)^2-4x^2y^2
x/4+2等于x,x=多少.y/5等于y-3,Y=多少
4(x+y)^2-12(x+y)+9因式分解
9(x-y)2-12(y2-x2)+4(x+y)2 因式分解