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Evaluate the following when a = 4 and b = 7 :

 

                     \[(a+b)^2 - (a^2 + b^2).\]

 Nov 18, 2020

Best Answer 

 #1
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-1

 

Well, work it out. 

 

(4 + 7)2 – (42 + 72)  

 

121 – (16 + 49)  =  121 – 65  =  56  

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 Nov 19, 2020
 #1
avatar
-1
Best Answer

 

Well, work it out. 

 

(4 + 7)2 – (42 + 72)  

 

121 – (16 + 49)  =  121 – 65  =  56  

.

Guest Nov 19, 2020
 #2
avatar+153 
+2

Nice job, that looks right.

 Nov 19, 2020

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