Question

If Q(x) = 6x2 - 1, find Q(-7).

Answer 1

`\huge \boxed{Q( - 7) = 293}`

Explanation:

`Q(x) = {6x}^(2) - 1`

To find Q(-7) , insert the value of x that's - 7 into Q(x). That is for every x in Q(x) , replace it with - 7

We have

`Q( - 7) = 6 ({ - 7})^(2) - 1 \\ = 6(49) - 1 \\ = 294 - 1`

We have the final answer as

`Q( - 7) = 293`

Hope this helps you