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dhdjsjjdhxdkdm dhdjsjjdhxdkdm
  • 24-04-2021
  • Mathematics
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What is the sum of 7z/x^2 - 4

What is the sum of 7zx2 4 class=

Respuesta :

clarch19
clarch19 clarch19
  • 24-04-2021

Answer:

9x-4 / (x²-4)

Step-by-step explanation:

common denominator is 'x²-4' which is (x-2)(x+2)

the term '7x' already has that denominator but 2/x+2 becomes 2(x-2)/(x²-4)

now you can add 7x to 2(x-2) which is 7x + 2x - 4 or 9x-4 and

your denominator remains as 'x²-4'

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