cwalcott cwalcott

23-06-2017
Mathematics

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If f(x) = x2 − 1, and f(2a) = 35, then what could be the value of a

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TheHero TheHero

23-06-2017

f(2a) = 4a^2 - 1 = 35

4a^2 = 36

a^2 = 9

a = + or - 3

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