Question
If ab = -15 and (a 2 + b 2 ) = 34,
then find the value of (a – b).Solution
We know that, (a – b) 2 = a 2 + b 2 – 2abATQ;
(a – b) 2 = 34 – 2 × (-15)
(a – b) 2 = 64
(a – b) = ±8
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