leilanig1206
leilanig1206 leilanig1206
  • 13-09-2021
  • Mathematics
contestada

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

Respuesta :

DavidWF
DavidWF DavidWF
  • 13-09-2021

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. [tex]-(4)^{2} -(-7)+5(4)(-7)[/tex]

2. [tex]-16-(-7)+5(4)(-7)[/tex]

3. [tex]-9+5(4)(-7)[/tex]

4. [tex]-9+20(-7)[/tex]

5. [tex]-9-140=-149[/tex]

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