summer7771 summer7771
  • 25-05-2018
  • Mathematics
contestada

i don’t know what to do on this question

i dont know what to do on this question class=

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Аноним Аноним
  • 25-05-2018
You just need to substitute the values into the expression.
I always say hug it when you plug it...which means put ( )s around the number you are substituting into the expression.

-2ab² - 2b³  
-2(-2)(-3)² - 2(-3)³
-2(-2)(9) - 2(-27)
4(9) - 2(-27)
36 + 54
90

The answer is a. 90
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