SOLUTION: Please help me solve this. Detailed workings would be very much appreciated! Many thanks. The functions of f and g are given by: f(x)=〖2x-3〗^2 and g(x)=7x+20 1)

Algebra ->  Functions -> SOLUTION: Please help me solve this. Detailed workings would be very much appreciated! Many thanks. The functions of f and g are given by: f(x)=〖2x-3〗^2 and g(x)=7x+20 1)       Log On


   

Question 1044838: Please help me solve this. Detailed workings would be very much appreciated! Many thanks.
The functions of f and g are given by: f(x)=〖2x-3〗^2 and g(x)=7x+20
1) Find (f+g)(x) in the form of 〖ax〗^2+bx+c
2) Find the value of f º g(2)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The functions of f and g are given by: f(x)= (2x-3)^2 and g(x)=7x+20
1) Find (f+g)(x) in the form of ax^2+bx+c **** Not (ax)^2
Add them
(f+g)(x) = (2x-3)^2 + 7x+20 = 4x^2 -12x + 9 + 7x + 20 = 4x^2 -5x + 29
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2) Find the value of f º g(2)
g(2) = 7*2+20 = 34
f(34) = (2*34-3)^2 = 65^2 = 4225