tolong bantu jawab pertanyaan di atas soal matematika tak beri poin banyak

a) fog(x) = 3(x² + 5) - 7
fog(x) = 3x² + 15 - 7
fog(x) = 3x² + 8
b) gof(x) = (3x - 7)² + 5
gof(5) = (3(5)-7)² + 5
= (15-7)² + 5
= 8² + 5
= 64+5
= 69
c) f-¹(x)
3x - 7 = y
3x = y + 7
x = (y+7)/3
f-¹(x) = (x+7)/3
d) f-¹og-¹(x)
g-¹(x)
x² + 5 = y
x² = y - 5
x = √(y-5)
g-¹(x) = √(x-5)
f-¹og-¹(x) = {(√x-5)+7}/3
e) = (gof)-¹(x) = f-¹og-¹(x) = {(x-5) + 7}/3 (sama seperti isian d)