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Algebra

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Denominator with Difference of Squares

ALGEBR-W6BJMM

Find A and B, if:

$$\frac{3}{x^{2} - 1} = \frac{A}{x - 1} + \frac{B}{x + 1}$$

A

A = -$\cfrac{2}{3}$ and B = $\cfrac{2}{3}$

B

A = $\cfrac{2}{3}$ and B = -$\cfrac{2}{3}$

C

A = $\cfrac{3}{2}$ and B = -$\cfrac{3}{2}$

D

A = -$\cfrac{3}{2}$ and B = $\cfrac{3}{2}$