Tolong di jawab secepatnya ya
Jawab:
Penjelasan dengan langkah-langkah:
fungsi komposisi.
f(x) = 2x + 5
g(x) = ( x – 1 )/( x + 4 )
(fog)(x) = 2 { ( x – 1 )/( x + 4 )} + 5
= ( 2x – 2 )/( x + 4 ) + 5
(fog)(a) = 5
(2a – 2 ) / ( a + 4 ) + 5 = 5
( 2a – 2 ) / ( a + 4 ) = 0
( 2a – 2 ) ( a + 4 ) = 0 ——–> a ≠ -4
a₁ = 1
a₂ = -4
opsi jawaban ( D )
semoga bisa membantu