(2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解
问题描述:
(2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解
答
(2x+y)²+(x+3y)(x-3y)-x(5x+8y)
=4x²+4xy+y²+x²-9y²-5x²-8xy
=-4xy-8y²
=-4(x+2y)²