(m-2)²=8,(m+n)²=2
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
(m²-2m)²n+2n(m²-2m)+n
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
(m-2)²=8,(m+n)²=2
若|m+n-5|+(2m+3n-5)²=0,求(m+n)²的值.
先化简再求值:(2m-n)(m+n)+(m-n)²-(6m³-4m²n)÷2m,其中m=2
(3m-4n)² -2m(m+n)
因式分解:①(m+n)³+2m(m+n)²+m²(m+n)
化简m²+(8/m)²=n²+(8/n)²
因式分解:(m-n)²-(2n-m)²
(m+n)²+2(m+n)+1因式分解,
初一数学题 |m+n-5|+(2m+3n-5)²=0,求(m+n)²的值?