4(x-y)方-25(x+y)方 因式分解
问题描述:
4(x-y)方-25(x+y)方 因式分解
答
4(x-y)^2-25(x+y)^2=[2(x-y)+5(x+y)][2(x-y)-5(x+y)]= -(7x+3y)(3x+7y)
4(x-y)方-25(x+y)方 因式分解
4(x-y)^2-25(x+y)^2=[2(x-y)+5(x+y)][2(x-y)-5(x+y)]= -(7x+3y)(3x+7y)