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