Jawab:
Penjelasan dengan langkah-langkah:
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Jawab:
Penjelasan dengan langkah-langkah:
f(2) = 3(2)³ + a(2)² - 4(2) + 2
2b = 24 + 4a - 8 + 2
2b = 18 + 4a
b = 9 + 2a
dibagi (x + 1) bersisa b
f (-1) = 3(-1)³ + a (-1)² - 4(-1) + 2
b = - 3 + a + 4 + 2
b = 3 + a
9 + 2a = 3 + a
2a - a = 3 - 9
a = - 6
b = 3 + a
b = 3 - 6
b = - 3