化简下列各式,两道题6x的四次方+2x²-10+x四次方-3x²y-1 m-{n-2m+【3m-(6m+3n)+5n】}

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化简下列各式,两道题6x的四次方+2x²-10+x四次方-3x²y-1                m-{n-2m+【3m-(6m+3n)+5n】}

化简下列各式,两道题6x的四次方+2x²-10+x四次方-3x²y-1 m-{n-2m+【3m-(6m+3n)+5n】}
化简下列各式,两道题
6x的四次方+2x²-10+x四次方-3x²y-1 m-{n-2m+【3m-(6m+3n)+5n】}

化简下列各式,两道题6x的四次方+2x²-10+x四次方-3x²y-1 m-{n-2m+【3m-(6m+3n)+5n】}
6x的四次方+2x²-10+x四次方-3x²y-1
=6x^4+2x²-10+x^4-3x²y-1
=7x^4+2x²-3x²y-11
m-{n-2m+【3m-(6m+3n)+5n】}
=m-n+2m-3m+6m+3n-5n
=6m-3n