Question

if x and y are positive numbers such that X square + 4 y square is equal to 17 when X Y is equal to 2 then find the value of x + 2y ​

Answer 1

Answer:

Step-by-step explanation:

Given Equation is x^2 + 4y^2 = 17 and xy = 2.

Now,

We know that:

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

                = 17 + 4(2)

                = 17 + 8

                = 25.

(x + 2y) = 5.