8y^3-4y+1因式分解
问题描述:
8y^3-4y+1因式分解
答
8y^3-4y+1
=(8y³-4y²)+(4y²-4y+1)
=4y²(2y-1)+(2y-1)²
=(2y-1)(4y²+2y-1)
注明:有理数范围分解到此为止,实数范围分解再用求根法继续分解.