因式分解 (x-2y)的平方+8xy

问题描述:

因式分解 (x-2y)的平方+8xy

(x-2y)²+8xy=x²-4xy+y²+8xy=x²+4xy+y²=(x+2y)²
祝学习愉快!

(x-2y)^2+8xy
=x^2-4xy+4y^2+8xy
=x^2+4xy+4y^2
=(x+2y)^2

(x-2y)²+8xy
=x²-4xy+4y²+8xy
=x²+4xy+4y²
=(x+2y)²