Question

What is X intercept of the graph of the function F(x) =x^2-16+64

Answer 1

Answer:
`x=8`

Explanation:

Given the quadratic function
`0=x^2-16+64`, you need to follow these steps:

1. You must substitute
`f(x)=0` into the function:

`0=x^2-16+64`

2. Now you need to factor the quadratic equation. Choose two numbers whose sum be -16 and whose product be 64.

These numbers are: -8 and -8.

Since the root appears twice, it is a "Double root". Then:

`(x-8)^2=0\\\\x=8`