Question

4. Evaluate the expression for the given value of each variable.

5a2 -7 -b3

when a = -2 and b = -3

please help!
NO LINKS!!!

Answer 1

-18

Explanation:

5a2-7-b3

`5*a*2-7-b*3`

`5\cdot \left(-2\right)\cdot \left(2\right)-7-\left(-3\right)\cdot 3`

Therefore, -18 is your answer.

Hope this helped! :)