Question

Again need help with these ones I don’t understand and they have to show work

Answer 1

Let’s rewrite the given equation by adding 81 to both sides:

`x^2 - 18x + 81= 65 + 81`

`(x - 9)^2 = 146`
Taking the square root of both sides, we get

`x - 9 = \pm√(146)`
or

`x = 9 \pm √(146) = 9 \pm 12.1 = 21.1\:\text{and}\:-3.1`