Question

2x+3y=8 and xy= 2 find 4x2+ 9y2

Answer 1

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Answer 2

Hey! ! !

Mate :-

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Question :-

☆ 2x+3y=8 and xy= 2 find 4x2+ 9y2

Solution :-

☆ Given :-

● 2x+3y=8 and xy= 2

:- We have to find 4x2+ 9y2 = ?

Squaring both sides of 2x+3y=8

:- ( 2x+3y=8 ) *2 = 8*2

= 4x*2 + 9x*2 + 12 (xy) = 64

:- we know that xy = 2

putting the value in the place of xy we have :-

= 4x*2 + 9x*2 + 24 = 64

:- 4x*2 + 9x*2 = 64 - 24

= 40 Ans

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☆ Regards :- ♡♡《 Nitish kr singh 》♡♡