Question

If x + 1 by x =40 and xy=6,find the value of 2x+y

Answer 1

Answer:dekh Bhai muzai nahi aata

Step-by-step explanation:

Answer 2

We know that,

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( a + b )² = a² + 2ab + b²

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According to the problem given,

4x² + y² = 40-------( 1 )

xy = 6----------------( 2 )

Do the square of ( 2x + y ),

( 2x + y )² = ( 2x )² + 2 × 2x×y + y²

= 4x² + 4xy + y²

= 4x² + y² + 4xy

= 40 + 4 × 6

[ from ( 1 ) and ( 2 ) ]

( 2x + y )² = 40 + 24

= 64

Therefore ,

2x + y = ±√64

= ± 8