Question

How do you solve `x^2 - x =30` using the quadratic formula?

Answer 1

`x=6 or x=-5`

Explanation:

arrange the equation `x^2 - x -30=0`
`x=\frac{-b\pm\sqrt{b^2-4ac\ }}{2a}.`
now `a=1 ,b=-1 and c=-30`
now solve using the quadratic equation
and get two equations one is `x=(1 +11)/ 2` and `x=(1-11)/2`
after solving them you will get `x=6` and `x=-5`