Question

if 4x square+ y square =40 and xy =6 then the value of 2x+y is​

Answer 1

Answer:

(2x+y)=8

Step-by-step explanation:

Given : 4x2 + y2 = 40 and xy = 6 Consider (2x + y)2 = 4x2 + y2 + 4xy       = 40 + 4(6) = 64 , Therefore, (2x + y) = 8 

Answer 2

Step-by-step explanation:

4x^2+y^2=40

(2x+y)^2 - 2xy =40

2x+y=√40+12

=√52