因式分解!急!很简单的
问题描述:
因式分解!急!很简单的
1.(2x-3y)(x+y)
2.-2x(x^2+3x-1)
3.y^2-(3/4)y+____=(y-___)^2
4.(x+y+z)(x-y-z)=( )^2-( )^2=_________
5.(1/2)xy^2+2x^2=( )(y^2+4x)
6.2x^3-32x
7.a^2*b^2+4-4ab
急!九点关闭问题!答得快,好的会加分
答
1.2X^2-XY-3Y^22.12X^3-6X^2+2X3.y^2-(3/4)y+__9/64__=(y-__3/8_)^24.(x+y+z)(x-y-z)=( X )^2-( Y+Z )^2=X^2-Y^2-2YZ-Z^25.(1/2)xy^2+2x^2=( X/2 )(y^2+4x)6.2X(X+4)(X-4)7.(ab-2)^2我就看你给不给分