Resolve \( \frac{3}{x^2+x-2} \) into partial fractions

Assessment: JAMB UTME - Mathematics - 1992 Subject: General Mathematics

Question 1 Report

Resolve \( \frac{3}{x^2+x-2} \) into partial fractions

Answer Details
3 x 2 + x − 2  =  3 ( x − 1 ) ( x + 1 )
A x − 1  +  B x + 2
A(x + 2) + B(x - 1) = 3
when x = 1, 3A = 3  →  a = 1
when x = -2, -3B = 3  →  B = -1
3 = 1 - 1
= 

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