Question

If h(x) = x – 7 and g(x) = x2, which expression is equivalent to (gon (5)?

(5 – 7)
O (5)2 – 7
O (5)?(5 – 7)
O (5 – 7)x2

Answer 1

(5 - 7)²

Explanation:

`h(x)=x-7,\ g(x)=x^2\\\\(g\circ h)(x)=g\bigg(h(x)\bigg)-\text{exchange x to x - 7 in}\ g(x):\\\\(g\circ h)(x)=(x-7)^2\\\\(g\circ h)(5)-\text{put x = 5 to the equation}\\\\(g\circ h)(5)=(5-7)^2`