SOLUTION: If a=-3 and b =4 , evaluate 2a^2 +4ab

Question 929815: If a=-3 and b =4 , evaluate 2a^2 +4ab
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!

Rewrite:



by replacing the letter "a" by  and replace the letter "b"
by :



There's nothing to do in the parentheses so do the exponent 
which is 9, so replace the  by :



Multiply the  by the  and get  so 
replace the  by :



Multiply the  by the  getting  so
replace the (((4(-3)}}} by :



Multiply the  by the  getting  so
replace the ((((-12)(4)}}} by :



Positive eighteen and negative 48 give final answer:



Edwin

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