20x2+253x+800因式分解 x4+y4+(x+y)4因式分解
问题描述：
20x2+253x+800因式分解 x4+y4+(x+y)4因式分解
答
20x2+253x+800=(5X+32)(4X+25)(x+y)²=(x+y)²（x+y)²=（x²+y²+2xy）²=(x²+y²)²+4x²y²+4xy(x²+y²)x4+y4=(x²+y²)²-2x²y&...