Verified Answer :

5(7x^2 - 3) 

5(7 · 2^2 – 3) as the second answer

Answer:

The expression \(5(7(2)^2-3)\) is equivalent to [g o f](2) and the value of [g o f](2) is 125.

Step-by-step explanation:

The given function are

\(f(x)=7x^2-3\)

\(g(x)=5x\)

We have to find the value of [g o f](2).

(f\circ g)(x)=f(g(x))

\((g\circ f)(2)=g(f(2))\)

\((g\circ f)(2)=f(7(2)^2-3)\)         [tex[\because f(x)=7x^2-3][/tex]

\((g\circ f)(2)=5(7(2)^2-3)\)         [tex[\because g(x)=5x][/tex]

\((g\circ f)(2)=125\)

Therefore the expression \(5(7(2)^2-3)\) is equivalent to [g o f](2) and the value of [g o f](2) is 125.