(1/2m²-n)(1/2m²+n)-(2m²-n)²+(-3/2)²
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/23 13:43:13
(1/2m²-n)(1/2m²+n)-(2m²-n)²+(-3/2)²(m²n+n²)-25/4m²n
-15m⁴+1/4n²
(2m-n)²-{(2/3m-1/2n)²-6[(1/2m-n)²-(1/2m+n)²]}-4/3m-(8/3m-7n)
3/4n²-6mn
-15m⁴+1/4n²
(2m-n)²-{(2/3m-1/2n)²-6[(1/2m-n)²-(1/2m+n)²]}-4/3m-(8/3m-7n)
3/4n²-6mn
(1/2m²-n)(1/2m²+n)-(2m²-n)²+(-3/2)²(m²n+n²)-25/4m²n
=1/4m⁴-n² -4m⁴+4m²n-n² -4m²n+9/4n²
=-15/4m⁴+1/4n²
(2m-n)²-{(2/3m-1/2n)²-6[(1/2m-n)²-(1/2m+n)²]}-4/3m*(8/3m-7n)
=4m²-4mn+n²-4/9m²+2/3mn-1/4n²-12mn-32/9m²+28/3mn
=3/4n²-6mn
=1/4m⁴-n² -4m⁴+4m²n-n² -4m²n+9/4n²
=-15/4m⁴+1/4n²
(2m-n)²-{(2/3m-1/2n)²-6[(1/2m-n)²-(1/2m+n)²]}-4/3m*(8/3m-7n)
=4m²-4mn+n²-4/9m²+2/3mn-1/4n²-12mn-32/9m²+28/3mn
=3/4n²-6mn
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
先化简再求值[(m+n)(m-n)-(m-n)²]÷(2n),其中m=-2,n=-1/2
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
2m(m²-n+1)计算
(m+n)²+2(m+n)+1因式分解,
化简-3(m-n)²-(m-n)平方-3(m-n)+4m-n)的平方+2(m-n)-1
(m+2n)²+2(m+n)(2m-n)+(2m+n)² 因式分解
m-n分之m - m+n分之n + m²-n²分之2mn
1+n-m÷m²-n² --- ---- m+2n m²+4mn+4n²
1+n-m/m+2n÷m²-n²/m²+4mn+4n²=
证明(m+n)²/2+(m+n)/4≥(m√n)+(n√m)
[(m+n)²-(m+2n)(3m-n)-5m²]除以2m,其中m=-2 n=1/2