Question

F(X) = (X - 4)^2 -7 could somebody tell me a step by step instruction on how to solve this? Thank you!!!

Answer 1

we know that (a-b)^2=a^2-2ab+b^2
f(x)=x^2-2*4*x+4^2-7=x^2-8x+16-7=x^2-8x+9