此题打漏四对括号.
(4x+1)/(x^2-7x+10)=A/(X-2) +B/(x-5)
4X+1=A(X-5)+B(X-2)
X=5:21=3B,B=7
X=2,9=-3A,A=-3
MM太粗心了吧,这种题本不该问,下次多想想,真的不会再问,打完后要看看,清楚了才发.
此题打漏四对括号.
(4x+1)/(x^2-7x+10)=A/(X-2) +B/(x-5)
4X+1=A(X-5)+B(X-2)
X=5:21=3B,B=7
X=2,9=-3A,A=-3
MM太粗心了吧,这种题本不该问,下次多想想,真的不会再问,打完后要看看,清楚了才发.