How do you solve using the completing the square method 4x^2-8=-13x?

1 Answer
Nghi N.
Mar 11, 2016

x = - 13/8 +- 17.23/8

Explanation:

4x^2 + 13x = 8
Divide the equation by 4 -->
(x^2 + (13x)/4) = 2
x^2 + (13x)/4 = 2
x^2 + (13x)/4 + 169/64 = 2 + 169/64
(x + 13/8)^2 = 2 + 169/64 = 297/64
(x + 13/8) = +- 17.23/8

x = - 13/8 +- 17.23/8

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