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valkas [14]
2 years ago
14

Find f(g(x)) and g(f(x)). f(x)=x²-2 and g(x)=√x+1

Mathematics
1 answer:
Archy [21]2 years ago
6 0

Answer:

1. x - 1

2. \sqrt{x^2-1}

Step-by-step explanation:

f(g(x)) = \sqrt{x+1}^2 - 2\\ = x + 1 - 2\\= x - 1

g(f(x)) =\sqrt{x^2-2+1}\\ = \sqrt{x^2-1}

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