4+12(x-y)+9(x-y)^2
3个回答
4+12(x-y)+9(x-y)^2
=2^2+2*2*[3(x-y)]+[3(x-y)]^2
=[2+3(x-y)]^2
=(3x-3y+2)^2
相关问题
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（x+y）^2-12(x+y)+9
9（x-y）^2-12（x-y）+4 （x^2+y^2）^2-4x^2y^2
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
4x²-4x+9y²-12y=-5,求-2x+y值
9(x-y)²-12(y²-x²)+4(x+y)²
x^2+6xy+9y^2-4x-12y+4
分解因式 4-12(x-y)+9(x-y)^2