n3kagaberacind n3kagaberacind

02-09-2016
Mathematics

contestada

If f(x) = 2x2 − 30, find f(4) would you put the 4 in the f(x) place?

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HomertheGenius HomertheGenius

02-09-2016

f ( x ) = 2 x² - 30
x = 4;
f ( 4 ) = 2 · 4² - 30 = 2 · 16 - 30 = 32 - 30 = 2

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