(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
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![(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](/uploads/image/z/11477438-62-8.jpg?t=%281%2F2m%26%23178%3B-n%29%281%EF%BC%8F2m%26%23178%3B%2Bn%29-%282m%26%23178%3B-n%29%26%23178%3B%2B%28-3%EF%BC%8F2%29%26%23178%3B%28m%26%23178%3Bn%2Bn%26%23178%3B%29-25%EF%BC%8F4m%26%23178%3Bn+-15m%26%238308%3B%2B1%EF%BC%8F4n%26%23178%3B+%282m-n%29%26%23178%3B-%7B%282%EF%BC%8F3m-1%EF%BC%8F2n%29%26%23178%3B-6%5B%281%2F2m-n%29%26%23178%3B-%281%2F2m%2Bn%29%26%23178%3B%5D%7D-4%2F3m-%288%2F3m-7n%293%2F4n%26%23178%3B-6mn)
(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
(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
(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
(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
原式=(1/4m^4--n^2)--4m^4+4m^2n--n^2+9/4m^2n+9/4n^2--25/4m^2n
=1/4m^4--n^2--4m^4--n^2+9/4n^2
=--15/4m^4+1/4n^2.
原式=(2m--n)^2--{(2/3m--1/2n)^2--6[(1/2m--n)+(1/2m+n)]...
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原式=(1/4m^4--n^2)--4m^4+4m^2n--n^2+9/4m^2n+9/4n^2--25/4m^2n
=1/4m^4--n^2--4m^4--n^2+9/4n^2
=--15/4m^4+1/4n^2.
原式=(2m--n)^2--{(2/3m--1/2n)^2--6[(1/2m--n)+(1/2m+n)][(1/2m--n)--(1/2m+n)]}--4/3m--(8/3m--7n)
=(2m--n)^2--{(2/3m--1/2n)^2--12mn}--4/3m--8/3m+7n
=4m^2--4mn+n^2--4/9m^2+2/3mn--1/4n^2+12mn--4mn+7n
=32/4m^2+14/3mn+1/4n^2+7n.
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