Penjelasan dengan langkah-langkah:
(f o g)(x)
= (x + 2)² + 5(x + 2) - 15
= x² + 4 + 4x + 5x + 10 - 15
= x² + 4 + 10 - 15 + 4x + 5x
= x² - 1 + 9x
= x² + 9x - 1
opsi B
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= (x + 2)² + 5(x + 2) - 15
= x² + 4x + 4 + 5x + 10 - 15
= x² + 9x - 1
(B)
Penjelasan dengan langkah-langkah:
(f o g)(x)
= (x + 2)² + 5(x + 2) - 15
= x² + 4 + 4x + 5x + 10 - 15
= x² + 4 + 10 - 15 + 4x + 5x
= x² - 1 + 9x
= x² + 9x - 1
opsi B