Math, asked by VibhorPal, 11 months ago

if x-y =12 and xy= 25/4,find x+y

Answers

Answered by rmn24

Hello users ...

we have given that
x-y=12 and xy=25/4

we have to find
x+y =?

solution:-
we know that
(x+y)² = (x-y)²+4xy

here
(x+y)² = 12² + 4×25/4
=> 144 +25 = 169

=> x+y = √169 = 13 answer

⭐⭐ hope it helps ⭐⭐

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VibhorPal: but after -2xy and +4xy are calculated,there comes +2xy. Then why we multiply with 4xy instead of 2xy

VibhorPal: please answer

VibhorPal: ?????????

Answered by ravindragulradhe

Is it correct

Please tell if no sorry

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