[tex] \\ [/tex]
f(a) = a³ + 7a² - a
f(9) = ...
[tex] \\ [/tex]
y.
f(a) = a³ + 7a² - a
f(9) = ...
[tex] \\ [/tex]
y.
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SOAL Q.
f(a) = a³ + 7a² - a
f(9) = 9³ + 7(9²) - 9
f(9) = (9.9.9) + 7(9.9) - 9
f(9) = (81.9) + 7(81) - 9
f(9) = 729 + 567 - 9
f(9) = 729 + 558
f(9) = 1.287
I Hope This Help!