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ParthKohliBest ResponseYou've already chosen the best response.0
Just subtract for finding (f  g) and add for finding (f + g).
 one year ago

tjones89Best ResponseYou've already chosen the best response.0
(fg)(x) = f(x)  g(x)
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
\[\rm (f  g)(x) = (2x  2)(x + 4)\]\[\rm (f + g)(x) = (2x + 2) + (x + 4)\]
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
Oh, then it gets a little difficult... you have to plug g(x) into f(x).
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
For example, if you got \(\rm f(x) = x^2\) and \(\rm g(x) = x+1\), then\[\rm f(g(x)) = f(x + 1) = (x + 1)^2\]
 one year ago

coolaiddBest ResponseYou've already chosen the best response.0
soo what would this be?
 one year ago

bluebrandonBest ResponseYou've already chosen the best response.0
for f(g(x)) just replace all the x in 2x2 with (x+4) and for g(f(x)) just replace all the x in x+4 with (2x2)
 one year ago

jiteshmeghwal9Best ResponseYou've already chosen the best response.0
\(x(fg)\)=\(f(x)g(x)\) now put the values of \(f(x)\) & \(g(x)\) & solve them.
 one year ago

nubeerBest ResponseYou've already chosen the best response.0
yup.. thats how its done.
 one year ago

coolaiddBest ResponseYou've already chosen the best response.0
so would it then be 2x+82 8x8?
 one year ago

coolaiddBest ResponseYou've already chosen the best response.0
2x times +4 and2 times +4
 one year ago

nubeerBest ResponseYou've already chosen the best response.0
noooo... (2x2) +4 u have to just open the bracket.. if there is a positive or negative sign outside the bracket that means its addint or subtracting not multiplying. your expression will be like 2x2 +4
 one year ago

coolaiddBest ResponseYou've already chosen the best response.0
so it would just be 2x2 +4? i dont have to solve it?
 one year ago

nubeerBest ResponseYou've already chosen the best response.0
(2x2)4 if it was written liek this then u had to multiplied.. and yes that would be your answer just simplify it 2x+2 would be your answer for gf(x)
 one year ago
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