Question

How do you solve the equation `-2x^2+10x+22=4` by completing the square?

Answer 1

`(x-2.5)^2-15.25=0`

Explanation:

`-2x^2+10x+22=4`

`-2x^2+10x+18=0`

`x^2-5x-9=0`

`(x-2.5)^2-2.5^2-9=0`

`(x-2.5)^2-6.25-9=0`

`(x-2.5)^2-15.25=0`