Ask Question
31 August, 12:18

What is the sum?

3/x^2-9 + 5/x+3

A) 8/x^2+x-6

B) 5x-12/x-3

C) - 5x / (x+3 (x-3)

D) 5x-12/x+3 (x-3)

+3
Answers (1)
  1. 31 August, 14:46
    0
    We will use the formula a^2-b^2 = (a-b) (a+b) to get the fractions to the same dominator.

    3/[ (x-3) (x+3) ]+5 / (x+3) =

    3/[ (x-3) (x+3) ]+5 (x-3) / (x+3) [ (x-3) (x+3) ] =

    (3+5x-15) / [ (x-3) (x+3) ] =

    (5x-12) / [ (x-3) (x+3) ]

    The final answer is D.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “What is the sum? 3/x^2-9 + 5/x+3 A) 8/x^2+x-6 B) 5x-12/x-3 C) - 5x / (x+3 (x-3) D) 5x-12/x+3 (x-3) ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers