2x2 + 3x - 5 = 0
2x2 - 2x + 5x - 5 = 0
2x(x - 1) + 5(x - 1) = 0
(x - 1)(2x + 5) = 0
x - 1 = 0 or 2x + 5 = 0
x = 1 or x = -5/2
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3x2 + 2x - 8 = 0 is a quadratic equation.
No
2x squared minus 4
2x2 + 2x - 8 = 2(x2 + x - 4). This can take any value greater than or equal to -8.5
(x - 2)(2x + 7)