Question

5-x=3
Work out the value of 3x^2

Answer 1

12

Explanation:

`5 - x = 3 \\ \\ 5 - 3 = x \\ \\ 2 = x \\ \\ x = 2 \\ \\ 3 {x}^(2) = 3 {(2)}^(2) = 3 * 4 = 12`