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Advanced Math / Nonlinear functions Difficulty: Easy

The function f is defined by fx=x2+x+71. What is the value of f2?

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Explanation

The correct answer is 77 . It’s given that the function f is defined by fx=x2+x+71. Substituting 2 for x in function f yields f2=22+2+71, which is equivalent to f2=4+2+71, or f2=77. Therefore, the value of f2 is 77 .