Question

f(x)=x²-1, g(x)=2x+1 ??
1. FoG
2.GoF​

Answer 1

Answer:

1) 4x² + 4x

2) 2x² - 1

Explanation:

     in these type of questions, we go right to left serially in function

given:

• f(x)=x²-1
• g(x)=2x+1

1)

fg(x)

f(2x+1)

(2x+1)²-1

4x² + 4x + 1 -1

4x² + 4x

2)

gf(x)

g(x²-1)

2(x²-1) + 1

2x² - 2 + 1

2x² - 1

Answer 2

I hope this helps you :)