Question

I'm taking College algebra and I don't know how to do this problem: f (x) = (x-2)^2 + 4

Answer 1

You must know that : (a-b) ^2 = a^2 - 2ab + b^2 so let a=x and b=2, applying above formula you'll get f(x) = x^2 - 4x +4 + 4 =x^2 - 4x +8 Hope you got it ;-) Revert back if you still face any trouble.