Question

if x^3+y^3+3xy=1 then find x+y​

Answer 1

Answer:

1

Step-by-step explanation:

we have ;

x³ + y³ + 3(1)(xy) = 1........(1)

We can interpret it as the expansion of (x+y)³

but (x+y)³ = x³ + y³ + 3(x+y)(xy).........(2)

from comparing (1) and (2) we can say that ;

(x+y) = 1

this also satisfies as (x+y)³ = (1)³ = 1 in (1)

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