Question

If F(x)=x^3+5x and G(x) =2x+1, find F(5) + G(6)​

Answer 1

`F(5)+G(6)=163`

Explanation:

We were given that:

`F(x)=x^3+5x` and
`G(x)=2x+1`

When x=5

`F(5)=5^3+5*5`

`F(5)=125+25=150`

When x=6

`G(6)=2*6+1`

`G(6)=12+1=13`

This implies that:

`F(5)+G(6)=150+13=163`