Question

Which of the following is the value of the expression (5a + 3)/(a ^ 2 - 1) when a = - 3 ?

Answer 1

-3/2

Explanation:

(5a + 3) / (a^2 - 1) when a = -3, substitute all values of "a" for -3:

(5(-3) + 3) / ((-3)^2 - 1)

(-15 + 3) / (9 - 1)

(-12) / (8)

Simplify:

- 3/2