Question

if X + Y is equal to 3 and X Y is equal to 2 then the value of x minus Y is equal to​

Answer 1

Answer: 1

Step-by-step explanation:

Given that X + Y = 3 and XY = 2

We know that, (X + Y)² = X² + Y² + 2XY

ie, 3² = X² + Y² + 2×2

ie, 9 = X² + Y² + 4

ie, X² + Y² = 9 - 4

                 = 5

Also , we know that, (X -Y)² = X² + Y² - 2XY

ie, (X -Y)² = 5 - 2 × 2

ie, (X - Y)² = 5 - 4

                = 1

ie, X - Y = √1

             = 1

HOPE THIS HELPS...........