Question

-a^2-b+5ab with a=4 and b=-7

Answer 1

-149

Explanation:

To solve, we must first plug our known values for a and b into the equation and then follow the order of operations.

1.
`-(4)^(2) -(-7)+5(4)(-7)`

2.
`-16-(-7)+5(4)(-7)`

3.
`-9+5(4)(-7)`

4.
`-9+20(-7)`

5.
`-9-140=-149`