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February 28, 2015

February 28, 2015

Posted by **Jayden Haddy** on Saturday, August 3, 2013 at 10:56am.

x(square) + 5x - 84

Pls show steps

x= or x=

- maths -
**Steve**, Saturday, August 3, 2013 at 2:14pmx^2 + 5x - 84 = 0

x^2 + 5x + (5/2)^2 - 84 - (5/2)^2 = 0

(x + 5/2)^2 = 361/4

x + 5/2 = ±19/2

x = -5/2 ± 19/2

x = -12, 7

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