Question

If a2+ b2 = 29 and ab = 2, find the value of a – b.

Answer 1

Answer :

a - b = 5

Solution :

a² + b² = 29

ab = 2

a - b = ?

We know that,

(a - b)² = a² + b² - 2ab

(a - b)² = 29 - 2(2)

(a - b)² = 25

(a - b) = √25

(a - b) = 5

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