Penjelasan dengan langkah-langkah:
f(x) = 2x² - x
f(-3) = 2·(-3)² - (-3)
= 2·9 + 3
= 21
f(-3) = 2(-3)² - (-3)
f(-3) = 2(-3(-3) + 3
f(-3) = 2(3(3) + 3
f(-3) = 6(3) + 3
f(-3) = 18 + 3
f(-3) = 21
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Penjelasan dengan langkah-langkah:
f(x) = 2x² - x
f(-3) = 2·(-3)² - (-3)
= 2·9 + 3
= 21
f(x) = 2x² - x
f(-3) = 2(-3)² - (-3)
f(-3) = 2(-3(-3) + 3
f(-3) = 2(3(3) + 3
f(-3) = 6(3) + 3
f(-3) = 18 + 3
f(-3) = 21