((-3/) /(x^2- 9)) + ((5) / (4x + 12))

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((-3/) /(x² - 9)) + ((5) / (4x + 12))

Guest Mar 3, 2015

+128732

+5

Best Answer

((-3/) /(x² - 9)) + ((5) / (4x + 12)) factor, where possible

(-3)/[(x + 3)(x - 3)] + (5)/[4(x + 3)] get common denominators

[(-3)(4) + (5)(x - 3)] / [(4)(x -3)(x + 3)] simplify

[-12 + 5x - 15] /[4(x -3)(x + 3)] =

[5x - 27] / [4(x -3)(x + 3)]

CPhill Mar 3, 2015

CPhill · Answer 1 · 2015-03-03T12:34:31

((-3/) /(x² - 9)) + ((5) / (4x + 12)) factor, where possible

(-3)/[(x + 3)(x - 3)] + (5)/[4(x + 3)] get common denominators

[(-3)(4) + (5)(x - 3)] / [(4)(x -3)(x + 3)] simplify

[-12 + 5x - 15] /[4(x -3)(x + 3)] =

[5x - 27] / [4(x -3)(x + 3)]