已知m+n=2,mn=1,求m³n+mn³+2m²n²的值

来源：学生作业学帮网编辑：学帮网时间：2024/06/05 03:31:31

m³n+mn³+2m²n²
=mn(m²+n²+2mn)
=mn(m+n)²
=1×2²
=4

m³n+mn³+2m²n²
=mn(m²+2mn+n²）
=mn(m+n)²
=1*4
=4

m³n+mn³+2m²n²
=mn(m²+n²+2mn)
=mn(m+n)²
=1*2²
=4