English, asked by manan70, 1 year ago

if 5 x minus 2 Y is equal to 7 and X Y is equal to 2 find the value of 5 x + 2 y ka whole square

Answers

Answered by rajkamal4
3
5x-2y=7
XY=2

AS WE KNOW THAT
(a+b)^2-(a-b)^2=4ab

(5x+2y)^2=4xy+(5x-2y)^2
=4(2)+(7)^2
=8+49
=55
Answered by preeti19741108
1

Answer

55

Explanation:

5x-2y=7

xy=2

As we know that

(a+b)^2-(a+b)^2=4ab

5x+2y=4x+(5x+2y)^2

4Ɨ2+7^2

8+49

55 ANSWER...... please mark me as a brain list

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