Question

Evaluate the expression when b=-5.
b^2-8b-6

Answer 1

59

Explanation:

This is a substitution question

So we will have to solve by substituting the given value into the equation

So let's solve

b^2-8b-6

And b is given to be-5

So let's substitute

(-5)^2-8(-5)-6

25+40-6

65-6

59

Therefore the final answer is 59

Answer 2

Explanation:

`{b}^(2) + 8b - 6 \\ {5}^(2) - 8 * 5 - 6 \\ 25 - 40 - 6 \\ = - 21`