if 4x×^2 +y^2 =40 and xy =6, find 2x + y
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Answered by
2
(2x+y)sq
= 4xsq +ysq +2.2x.y
= 40 +4xy
= 40+24
= 64
Hence (2x+y)sq= 65
Ie 2x+y=8 Ans
= 4xsq +ysq +2.2x.y
= 40 +4xy
= 40+24
= 64
Hence (2x+y)sq= 65
Ie 2x+y=8 Ans
Anonymous:
(2x+y)sq=65 sory by mistake its written 65
Answered by
5
(2x+y) = 8
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