10 AMAZING Christmas Dessert Books: 220 Recipes to Delight Your Guests & Family This Christmas

10 AMAZING Christmas Dessert Books: 220 Recipes to Delight Your Guests & Family This Christmas

Matematika Sekolah Menengah Pertama minta tolong yaa kak​

minta tolong yaa kak​

Jawaban:

E.0

Penjelasan dengan langkah-langkah:

Diketahui: f(x)= x + 3 dan (g o f) (x) = 2x² + 4x -3

(g o f)(x) = 2x² + 4x - 3

g( f(x)) = 2x²+ 4x - 3

g ( x + 3) = 2x² + 4x - 3

Misalkan, x + 3 = p, maka

x = p - 3

g(p) = 2( p - 3 )² + 4 ( p - 3 ) - 3

g(p) = 2p² - 12p + 18 + 4p - 12- 3

g(p) = 2p² - 8p + 3

g(x) = 2x² - 8x + 3.

Maka :

f o g(1) = f (g(1)) = f ( 2.1² - 8.1 + 3)

= f (-3) = -3+3=0.

MAAF JIKA SALAH

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