Steve S. answered • 02/18/14
Tutor
5
(3)
Tutoring in Precalculus, Trig, and Differential Calculus
see http://www.wyzant.com/resources/answers/27391/rational_functions
same problem
Cor G.
asked • 02/18/14rational functions
How to simplify?
1 / 2(2x+5) + 3 ÷ 2/(x+9) + 1/4
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2 Answers By Expert Tutors
Steve S. answered • 02/18/14
Tutor
5
(3)
Tutoring in Precalculus, Trig, and Differential Calculus
Assuming:
1 / (2(2x+5)) + 3 ÷ 2/(x+9) + 1/4
Can't divide by zero so x ≠ -5/2, -9
1 / (2(2x+5)) + 3(x+9)/2 + 1/4
2 / (4(2x+5)) + 6(x+9)(2x+5)/(4(2x+5)) + (2x+5)/(4(2x+5))
(2 + 6(x+9)(2x+5) + (2x+5)) / (4(2x+5))
(2 + 6(2x^2+13x+45) + 2x + 5) / (4(2x+5))
(2 + 12x^2 + 78x + 270 + 2x + 5) / (4(2x+5))
(12x^2 + 80x + 277) / (4(2x+5))
1 / (2(2x+5)) + 3 ÷ 2/(x+9) + 1/4
Can't divide by zero so x ≠ -5/2, -9
1 / (2(2x+5)) + 3(x+9)/2 + 1/4
2 / (4(2x+5)) + 6(x+9)(2x+5)/(4(2x+5)) + (2x+5)/(4(2x+5))
(2 + 6(x+9)(2x+5) + (2x+5)) / (4(2x+5))
(2 + 6(2x^2+13x+45) + 2x + 5) / (4(2x+5))
(2 + 12x^2 + 78x + 270 + 2x + 5) / (4(2x+5))
(12x^2 + 80x + 277) / (4(2x+5))
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Cor G.
02/18/14