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If f: R → R and g: R → R are two mappings defined as f(x) = 2x and g(x) = x2 + 2, then the value of (f + g)(2) is:
Correct answer is '10'. Can you explain this answer?

Answers

Given, f(x) = 2x, g(x) = x2 + 2
then, (f + g)(2) = f(2) + g(2)
= (2 × 2) + (22 + 2)
= 4 + 6
= 10
Hence, the correct answer is 10.

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Given, f(x) = 2x, g(x) = x2 + 2then, (f + g)(2) = f(2) + g(2)= (2 × 2) + (22 + 2)= 4 + 6= 10Hence, the correct answer is 10.