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Mariulka [41]
3 years ago
10

HELP OFFERING 50 points!!

Mathematics
1 answer:
expeople1 [14]3 years ago
4 0

Answer:

f(g(x)) =  5x^{2}   + 10x+ 5

Step-by-step explanation:

Here, the given functions are:

f(x)  = 5x^2\\g(x) = x+1

Now, (fg)(x)  = f (g(x))

f(g(x))= f (x+1)

\implies f(x+1)  = 5(x+1)^2

By ALGEBRAIC IDENTITY:

(a+b)^2  = a^2 + b^2  + 2ab\implies (x+1)^2  = x^{2}  + 1 + 2x

So, 5(x+1)^2   = 5(x^{2}  + 2x + 1)  = 5x^{2}   + 10x+ 5

Hence, f(g(x)) =  5x^{2}   + 10x+ 5

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