SOLUTION: g(x)=6x+12 f(x)=2X+3 Question: 1. Find the (f o g) (x)+X^2 2. Set the answers to part 1 equal to 0 and solve by factoring HELP!!!!!!! I DON"T UNDERSTAND

Algebra ->  Functions -> SOLUTION: g(x)=6x+12 f(x)=2X+3 Question: 1. Find the (f o g) (x)+X^2 2. Set the answers to part 1 equal to 0 and solve by factoring HELP!!!!!!! I DON"T UNDERSTAND       Log On


   

Question 80200: g(x)=6x+12
f(x)=2X+3
Question: 1. Find the (f o g) (x)+X^2
2. Set the answers to part 1 equal to 0 and solve by factoring
HELP!!!!!!! I DON"T UNDERSTAND
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
g(x)=6x+12
f(x)=2X+3
Question: 1. Find the (f o g) (x)+X^2
f o g (x) = f[6x+12)
=2(6x+12)+3
=12x+27
Then fog(x)+x^2 = x^2+12x+27
-------------
2. Set the answers to part 1 equal to 0 and solve by factoring
x^2+12x+27=0
(x+3)(x+9)=0
x=-3 or x=-9
-----------------
Cheers,
Stan H.