Question

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

Answer 1

Answer:

-149

Step-by-step 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. $-9-140=-149$