Solveeit Logo

Question

Question: If \(\frac{3x + 4}{x^{2} - 3x + 2} = \frac{A}{x - 2} - \frac{B}{x - 1}\),then \((A,B) =\)...

If 3x+4x23x+2=Ax2Bx1\frac{3x + 4}{x^{2} - 3x + 2} = \frac{A}{x - 2} - \frac{B}{x - 1},then (A,B)=(A,B) =

A

(7, 10)

B

(10, 7)

C

(10, – 7)

D

(– 10, 7)

Answer

(10, 7)

Explanation

Solution

3x+4=A(x1)B(x2)3x + 4 = A(x - 1) - B(x - 2)

\Rightarrow 12log0.1,x2\frac{1}{2} \leq \log_{0.1},x \leq 2 4=A+2B4 = - A + 2B

\Rightarrow A=10,B=7A = 10,B = 7

\therefore (A,B)=(10,7)(A,B) = (10,7).