Question

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...

Answer 1

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)