Question

Evaluate the expression when a=4

Answer 1

-12

Explanation:

The question is asking us to evaluate the expression, given that a = 4

So, I plug in 4 for a:

`\sf{a^2-9a+8}`

`\sf{4^2-9(4)+8}`

Evaluate the exponents and multiply:

`\sf{16-36+8}`

Simplify

`\sf{-12}`

Therefore, the answer is -12.

Answer 2

Hello!

Answer:

`\Large \boxed{ \sf -12 }`

Explanation:

Replace a by 4:

`\sf 4^(2) -9 * 4 + 8`

Simplify the expression:

`\sf 16 - 36 + 8`

Simplify the expression:

`\sf -12`