Question

Question #e769e

Answer 1

`=> x=-6" or "x=+7`

Explanation:

This is another way of asking you solve a quadratic equation being set to equal zero

From the question we have:

`" "x=x^2-42`

Rearranging gives

`" "x^2-x-42=0`

`" "(x+6)(x-7)=0`

`=> x=-6" or "x=+7`