Question

How do you evaluate `x^3 + 5` when x = 4?

Answer 1

`69`

Explanation:

`"substitute x = 4 into the expression"`

`rArr(color(red)(4))^3+5`

`=(color(red)(4)xxcolor(red)(4)xxcolor(red)(4))+5`

`=(16xxcolor(red)(4))+5=64+5=69`