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Evaluate each expression below if a = -2 and b=3

A) 3a^2 - 5b + 8

B) 2/3b - 5a

C) a+2b/4 +a

 Aug 27, 2014

Best Answer 

 #1
avatar+118723 
+5

I'll just do the first one for you. 

 

$$\\3a^2 - 5b + 8\\
=3*(-2)^2-5*(3)+8\\
=3*4-5*(3)+8\\
=12-15+8\\
=5\\$$

 Aug 28, 2014
 #1
avatar+118723 
+5
Best Answer

I'll just do the first one for you. 

 

$$\\3a^2 - 5b + 8\\
=3*(-2)^2-5*(3)+8\\
=3*4-5*(3)+8\\
=12-15+8\\
=5\\$$

Melody Aug 28, 2014

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