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13-09-2019
Mathematics

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if f(x)=x+3 and g(x)= x^2 -4 find the expression for g(f(x))

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veroenid veroenid

13-09-2019

Answer:g(f(x))= x^2 +6x+5

Step-by-step explanation:

g(f(x))= x^2 -4

g(f(x))= (x+3)^2 -4

g(f(x))= (x+3)(x+3) -4

g(f(x))= x^2 +6x+9-4

g(f(x))= x^2 +6x+5

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