Answer: hope this helps ♡
7
Explanation:
f = 3
7 + 4 + f^2 - 5f + 2
= 7 + 4 + 3² - 5*3 + 2
= 7 + 4 + 9 - 15 + 2
= 20 - 15 + 2
= 5 + 2
= 7
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