How do I solve this equation? (2.x.x)-5x-25=0

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1 Answer

(2 * x * x) - 5x - 25 = 0
2x^2 - 5x - 25 = 0
2x^2 - 10x + 5x - 25 = 0
(2x^2 - 10x) + (5x - 25) = 0
(2x)(x - 5) + 5(x - 5) = 0
(2x + 5)(x - 5) = 0
2x + 5 = 0 or x - 5 = 0
x = -5/2 or x = 5
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