Question

if f(x)=4x+3
find f (f(x) )

Answer 1

Answer:

$4x + 3 \\ x = - 3 \div 4$

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given, f(x) = 4x+3

=> f(f(x)) = 4(f(x)) + 3

=> f(f(x)) = 4(4x+3)+3 = 16x+12+3

=> [ f(f(x)) = 16x + 15 ] ✓✓