Question

If X square + y square is equal to 26 and x y is equals to 3 find the value of x + y

Answer 1

Step-by-step explanation:

We have x^2 + y^2 = 26 and xy = 3

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

= 26 + 2(3)

= 26 + 6

= 32

Now,

$x + y = \sqrt{32 } \\ x + y = 4 \sqrt{2}$

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