Question

Consider the functions f(x) = x2 − 13 and g(x) = x + 5. What is the value of f[g(−4)]?
−12
3
−13
8

Answer 1

first find \(g(-4)\)

Answer 2

\(g(x) = x+5\)

\(g(-4)=?\)

Answer 3

x-20?

Answer 4

Nope, you need to replace "x" by "-4"

Answer 5

I am confused.

Answer 6

Easy,

\(g(x) = x+5\)

\(g(-4)=-4+5 = 1\)

Answer 7

\(f(g(-4)) = f(1) = ?\)

Answer 8

find the value of \(f(1)\) and you're done!

Answer 9

Is it D?????? 8?????????????

Answer 10

nope, don't guess haha

Answer 11

._.

Answer 12

\(f(x)=x^2-13\)

\(f(1)=?\)

Answer 13

replace \(x\) by \(1\) on right hand side expression

Answer 14

So -12?????

Answer 15

Yes!

Answer 16

THANK YOU!!!!!!

Answer 17

np

Answer 18

@ganeshie8 can you check 1 for me?

Answer 19

If (9x − 4)(9x + 4) = ax2 − b, what is the value of a?

The value of a is _____________.

Numerical Answers Expected!

Answer for Blank 1:

Answer 20

Is it 81??

Answer 21

Correct!

Answer 22

Oh okay thank you so much!

Answer 23

yw