Question

QF Q6.) Find the function for a.

Answer 1

(fоg)(x)=f(g(x))
=f(4x^2-3)
=2(4x^2-3)-4
=8x^2-6-4
=8x^2-10

Answer 2

The function for a is (f o g) (x) = 8x^2-10.



Explanation

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$f(x)=2x-4, g(x)=4x^2-3, (f o g)=f(g(x))$  

I already knew that the g of x is equal to $4x^2-3$ so I substitute inside of the g of x

$g(x)=4x^2-3$ =======> $f(x)=4x^2-3$ =============> $2(4x^2-3)-4$ 

simplify it 
 
$2(4x^2-3)-4$  =======> $8x^2-6-4$ =========> $8x^2-10$

$(f o g) = 8x^2-10$