因式分解18-8X^2+8XY-2Y^2
问题描述：
因式分解18-8X^2+8XY-2Y^2
答
18-8X^2+8XY-2Y^2
=2[9-(4x^2-4xy+y^2)]
=2*[9-(2x-y)^2]
=2(3+2x-y)(3-2x+y)
答
18-8X^2+8XY-2Y^2
=18-2(4X^2-4XY+Y^2)
=2[9-(2X-Y)^2]
=2(3+2X-Y)(3-2X+Y)