SOLUTION: Show: {{{ab = (1/2)((a+b)^2 - (a^2 + b^2))}}}

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Question 542379: Show:

Found 2 solutions by josmiceli, neatmath:
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!




OK

Answer by neatmath(302)   (Show Source): You can put this solution on YOUR website!

Here we just need to manipulate the right side of the equation:

given

expand right side

simplify

combine like terms

cancel the 2's

and you have shown that

I hope this helps!

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