berrybailey94 berrybailey94

22-11-2019
Mathematics

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Given the function ƒ(x) = 20x2 − 18x − 25, find ƒ(−1).

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fadya252 fadya252

22-11-2019

f(x) = 20x² - 18x - 25

f(-1) = 20(-1)² - 18(-1) - 25

= 20 + 18 - 25

= 13

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