Question

Evaluate the expression when a=4A^2+5a-8

Answer 1

Given: The expression below:

`a^2+5a-8`

To Determine: The value of the expression when

`a=4`

To achieve this, substitute a= 4 into the expression as shown below:

`\begin{gathered} a^2+5a-8 \\ 4^2+5(4)-8 \\ 16+20-8 \\ 36-8 \\ 28 \end{gathered}`

Hence, the value of the given expression is 28