Question

Which are the roots of the quadratic function f(q) = q2 – 125? Select two options.

Answer 1

Answer: ±11.18

Explanation:

EDGE. 2021

Answer 2

±11.18

Explanation:

the function is:

`f(q)=q^2-125`

and to find the roots we need to find which values of
`q` makes the function result in zero:

`q^2-125=0`

solving for
`q`:

`q^2=125\\q=√(125)`

A square root has two solutions, one positive and one negative, so the solutions are:

`q=`±
`√(125)` ≈ ±11.18

the roots of the quadratic equation are +11.18 and -11.18