Question

Q. If 4x² + y² = 40 and xy = 6, then the value of
2x + y is
(a) ±6
(b) ±8
(c) ±7
(d) ±110

send full solution​

Answer 1

Answer:

I think d is answer I am right please reply me.

Answer 2

Answer:

Answer is Option B

Step-by-step explanation:

We have,

(2x+y)^2 =(2x)^2+y^2+2×2x×y

⇒(2x+y)^2=(4x^2+y^2)+4xy

⇒(2x+y)^2=40+4×6

⇒(2x+y)^2=64

⇒2x+y=±√64

⇒2x+y=±8

Hope you like it....

Plz Mark me as Brainlist....