Question

How do you solve `x^2 - 9x = -8`?

Answer 1

`x=8` or `x=1`

Explanation:

Given:
`color(white)("XXX")x^2-9x=-8`

Re-write as
`color(white)("XXX")x^2-9x+8=0`

Factor
`color(white)("XXX")(x-8)(x-1)=0`

Which implies either `(x-8)=0` or `(x-1)=0`

So either `x=8` or `x=1`