Find all values of x such that 2x^2 +9x - 5=0.
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2x^2 + 9x -5 = 0
2x^2 + 10x-1x-5=0
2x(x+5) -1(x+5) = 0
(x+5)(2x-1) = 0
x = -5 or x = 1/2
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