1. If a + b = 6, a - b = 2, then the value of 2*(a^2 + b^2 ) is :
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By: anil on 05 May 2019 01.59 am
here we are given with a + b = 6.......(1) a - b = 2...(2)
adding both equations 2a = 8 a = 4 so b = 2 we need to calculate $$2 imes (a^2 + b^2 ) = 2 imes (4^2 + 2^2) = 40$$
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adding both equations 2a = 8 a = 4 so b = 2 we need to calculate $$2 imes (a^2 + b^2 ) = 2 imes (4^2 + 2^2) = 40$$