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IrinaVladis [17]
3 years ago
8

80=-8a please I need the answer

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
6 0
80=-8a 
We are trying to solve for a. So we need to get a alone. To do that we have to divide each side by -8. 
80/-8= -8a/-8
Once you have solved each side you will get the following. 
-10=a
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Answer:

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Step-by-step explanation:

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(x^3+3x^2)=x^2\left(x+3\right)

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  • Factor out common term x+3

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x^2-9=\left(x+3\right)\left(x-3\right)

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x^3+3x^2-9x-27=\left(x+3\right)^2\left(x-3\right)=0

  • Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0

x+3=0, \quad{x=-3}\\x-3=0, \quad{x=3}

The solutions are

x=-3,\:x=3

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