Question

If (x²+y²)÷2xy=-1, prove that (x+y)²=0​

Answer 1

Answer:

which class of maths is this?

Answer 2

Answer:

yes it  is  true

Step-by-step explanation:

as we know

(x+y)^2 = x^2 +y^2 +2xy         (i)

as (x²+y²)÷2xy=-1,

so (x²+y²)  =2xy*-1,

(x²+y²)   = - 2xy,

put this value in (i)

so (x+y)² = -2xy +2xy

(x+y)² = 0

proved