m的四次方n-n=?x的3次方-xy的二次方 用因式分解

问题描述:

m的四次方n-n=?x的3次方-xy的二次方 用因式分解

m的四次方n-n
=n(m⁴-1)
=n(m²+1)(m²-1)
=n(m²+1)(m+1)(m-1)
x的3次方-xy的二次方
=x(x²-y²)
=x(x+y)(x-y)


m^4n-n
=n(m^4-1)
=n[(m²)²-1²]
=n(m²-1)(m²+1)
=n(m-1)(m+1)(m²+1)
x³-xy²
=x(x²-y²)
=x(x-y)(x+y)