Question

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

Answer 1

`\bold{y=(x+5)^2-27}`

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`