Question 1079828
Common denominator is x^2-x-12
A(x+3)+B(x-4)=1
Ax+3A+Bx-4B=1
Let x=-3
-3A+3A-3B-4B=1
B=-1/7
Let x=4
7A=1. A=1/7
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A(x+3)+B(x-5)=2
Ax+3A+Bx-5B=2
Let x=-3
-8B-2; B=-1/4
Let x=5
8A=2
A=1/4