Expand [1/2a-1/3b+1]^2
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Using identity - (a+b+c)^2= a^2 + b^2 +c^2 +2ab +2bc + 2ca
We get ,
(1/2a)^2+ (-1/3b)^2+ (c)^2 +{ 2(1/2a)(-1/3b)} +{2 (-1/3b)(c) }+ {2 (c) (1/2a)}
= a - 2/3b + c^2 -1/3ab -2/3bc +ac
Step-by-step explanation:
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