Question

Complete the square to re-write the quadratic function in vertex form: y = x2+ 10x - 2

Answer 1

Answer:

            $\bold{y=(x+5)^2-27}$

Step-by-step explanation:

                                      $y = x^2+ 10x - 2\\\\y = x^2+ 2\cdot x\cdot5+5^2-5^2 - 2\\\\y=(x+5)^2-25-2\\\\y=(x+5)^2-27$