Question

If q(x)=7x^2-1 find q(-9)

Answer 1

For this, we are just going to plug in -9 for every x and then solve the equation:

`q(x)=7x^(2) -1`

`q(-9)=7(-9)^(2) -1`

`q(-9)=7(81)-1`

`q(-9)=566`

Now we know that q(-9) is equal to 566.