Question

Please do not guess I have to answer this correctly! Please make sure you notice all the symobols!!

Evaluate the expression for a = -1
and b = 5. Show your work.

5a - 7b + b^2

Answer 1

5 x (-1) - 7 x 5 + 5^2
-5 - 35 +25
-40 + 25
= -25

Answer 2

5 a - 7 b + b ^ 2 = -15

Explanation:

Evaluation of the expression for a = - 1 and b = 5.

5 a - 7 b + b ^ 2,

Putting the values in expression,

= 5 a - 7 b + b ^ 2,

= 5 ( - 1 ) - 7 ( 5 ) + ( 5 ) ^ 2,

= - 5 -35 + 25,

= - 40 + 25,

= -15