Question
Suppose xy = -15 and (x² + y²) = 34, then determine
the value of (x – y).Solution
ATQ,
We know that, (x – y) ² = x² + y² – 2xy
ATQ;
(x – y) ² = 34 – 2 × (-15)
(x – y) ² = 64
(x – y) = ±8
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