Question

If 5x -2y =7 and xy=2, find the value of (5x+2y)whole square .

Answer 1

Answer:

According the question, the value is 129..

Answer 2

Step-by-step explanation:

here

5x-2y=7. (both sides squaring)

we get,

25x^2+4y^2-20xy=49. (on putting xy=2)

we get,

25x^2+4y^2=89

therefore,

(5x+2y)^2=25x^2+4y^2+20xy=89+40=129 ans.

I hope it will help you