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:

The number is 3

Step-by-step explanation:

Let the number be : x

According to question ,

5x + 3 = 2x^2

2x^2-5x-3

2x^2 -6x +x -3

2x(x-3)+1(x-3)

(2x+1)(x-3)

when (2x+1) =0

x = -1/2. {-1/2 is not a whole number}

when(x-3) = 0

x = 3 {3 is a whole number}

So the correct answer is 3

If the answer meets your expectations then please mark it as brainliest