Jawabanmu

2014-05-01T12:34:26+07:00
F (a) = 2a^2 - a + 1
f (-2) = 2(-2)^2 - (-2) + 1
f (-2) = -4^2 + 2 +1
= 16 + 2 + 1
= 19

Jawaban paling cerdas!
2014-05-01T12:37:35+07:00
Dik :  f(a) = 2a² - a + 1
Dit  :       bayangan -2

jawab :
f(a) = 2a² - a + 1
f(-2) = 2(-2^2) - (-2) + 1
       = 2(4) + 2 + 1
       = 8 + 2 + 1
       = 11

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