Question

If 5 times of a positive whole number is less by 3 than twice of its square,then let us determine the number.​

Answer 1

Answer:

$1 \: or \: \frac{2}{3}$

Step-by-step explanation:

$let \: the \: number \: is \: x \\ 5x - 3 = 2 {x}^{2} \\ 2 {x}^{2} - 5x + 3 = 0 \\ 2 {x}^{2} - 2x - 3x + 3 = 0 \\ 2x(x - 1) - 3(x - 1) = 0 \\ (x - 1)(2x - 3) = 0 \\ x = 1 \\ x = \frac{3}{2}$