1)x^5+x^3-x^2-12)mn-m-n+1请问这两个要怎么分解呢?写清楚点哦...

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1)x^5+x^3-x^2-12)mn-m-n+1请问这两个要怎么分解呢?写清楚点哦...
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1)x^5+x^3-x^2-12)mn-m-n+1请问这两个要怎么分解呢?写清楚点哦...
1)x^5+x^3-x^2-1
2)mn-m-n+1
请问这两个要怎么分解呢?写清楚点哦...

1)x^5+x^3-x^2-12)mn-m-n+1请问这两个要怎么分解呢?写清楚点哦...
1.原式=x^3(x^2+1)-(x^2+1)=(x^2+1)(x^3-1)=(x^2+1)(x-1)(x^2+x+1)
2.原式=m(n-1)-(n-1)=(m-1)(n-1)

1、x^5+x^3-x^2-1
=x^3(x^2+1)-(x^2+1)
=(x^2+1)(x^3-1)
=(x^2+1)(x-1)(x^2+x+1)
2、mn-m-n+1
=m(n-1)-(n-1)
=(n-1)(m-1)

x^5+x^3-x^2-1=x^2(x^3-1)+x^3-1
=(x^2+1)(x^3-1)
=(x^2+1)(x-1)(x^2+x+1)
mn-m-n+1 =m(n-1)-(n-1)=(m-1)(n-1)

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