(2X-Y)²-1(X-2Y)(X+2Y)=? 因式分解 过程

问题描述:

(2X-Y)²-1(X-2Y)(X+2Y)=? 因式分解 过程

(2X-Y)²-1(X-2Y)(X+2Y)
=4x²-4xy+y²-x²+4y²
=3x²-4xy+5y²

(2X-Y)²-1(X-2Y)(X+2Y)
=4x²-4xy+y²-(x²-4y²)
=4x²-4xy+y²-x²+4y²
=3x²-4xy+5y²