Question

The sum of a whole number and twice the square of the number is 10. Find the number.

Answer 1

x =
`(10)/(1 + 2x)`

Explanation:

Let the number be x

x + 2x² = 10

Factorize x + 2x²

x(1 + 2x) = 10

Divide both sides by (1 + 2x)

x =
`(10)/(1 + 2x)`