若(am+1bn+2)(a2n-1b2n)=a5b3,则求m+n的值.
题型:解答题难度:一般来源:不详
若(am+1bn+2)(a2n-1b2n)=a5b3,则求m+n的值. |
答案
(am+1bn+2)(a2n-1b2n)=am+1×a2n-1×bn+2×b2n =am+1+2n-1×bn+2+2n =am+2nb3n+2=a5b3. ∴m+2n=5,3n+2=3,解得:n=,m=, m+n=. |
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