If x2 + y2 = 29 and xy = 2, find the value ofx – y

1.	If x2 + y2 = 29 and xy = 2, find the value ofx – y
Answer» Given , x – y We know that x² + y² = 29 x² + y² + 2xy – 2xy = 29 (x – y)² + 2 (2) = 29 (x – y)² + 4 = 29 (x – y)² = 25 (x – y) = ± 5

Answer»

Given ,

x – y

We know that

x² + y² = 29

x² + y² + 2xy – 2xy = 29

(x – y)² + 2 (2) = 29

(x – y)² + 4 = 29

(x – y)² = 25

(x – y) = ± 5

Discussion

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