Question

Which are the roots of the quadratic function f(q) = q2 – 125? Check all that apply.

Answer 1

The answer is positive 25 and negative 25

Answer 2

The roots of the quadratic function is 5,-5.

Explanation:

Given : Function
`f(q)=q^2-125`

To find : The roots of the quadratic function?

Solution :

Step 1 - Write the function as equating to zero to find roots

`q^2-125=0`

Step 2 - Add 125 both side,

`q^2-125+125=125`

`q^2=125`

Step 3 - Taking the root both side,

`√(q^2)=√(125)`

`q=\pm5`

Therefore, The roots of the quadratic function is 5,-5.