If X and Y be two positive real number such as that the 4 X square + Y square = 40 and X Y = 6 then find the value of 2x + Y
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ft is ok bhama j uhdb jab it hi j unit uthi
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we know (a+b)^2=a^2+b^2+2ab
(2x+y)^2=4x^2+y^2+4xy
=40+4(6)=40+24=64
(2x+y)^2=64
taking square root both sides....
2x+y=±√64=±8
hope this help you....
(2x+y)^2=4x^2+y^2+4xy
=40+4(6)=40+24=64
(2x+y)^2=64
taking square root both sides....
2x+y=±√64=±8
hope this help you....
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