if 5 times of a positive number is less by 3 than twice of its square,then let us determine the number.
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I think you mean
2x^2 - 5x = 3
2x^2 - 5x - 3 = 0
(2x + 1)(x - 3) = 0
x = -1/2 and x = 3
Since it is a positive you want,
x = 3
2x^2 - 5x = 3
2x^2 - 5x - 3 = 0
(2x + 1)(x - 3) = 0
x = -1/2 and x = 3
Since it is a positive you want,
x = 3
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