因式分解8x^2(2x^2-y^2)+y^4
问题描述:
因式分解8x^2(2x^2-y^2)+y^4
答
8x²(2x²-y²)+y^4
=16x^4-8x²y²+y^4
=(4x²-y²)²
=(2x+y)²(2x-y)²