Question

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Answer 1

2

Explanation:

`{a}^(2) + 7a + 8`

Substitute

`a = - 6`

in the above equation to get:

`{( - 6)}^(2) + 7( - 6) + 8`

Simplify:

`36 + ( - 42) + 8`

`36 - 42 + 8`

`- 6 + 8`

`2`

Answer 2

2

Explanation:

Substitute a = - 6 into the expression, that is

a² + 7a + 8

= (- 6)² + 7(- 6) + 8 = 36 - 42 + 8 = - 6 + 8 = 2