Question

If a2+b2 = 25
Ab = 12
Find the value of a+b

Answer 1

Answer:

Using (a+b)^2 = a^2 + b^2+ 2ab

          (a+b)^2 = 25 + 2*12

          (a+b)^2 = 25 + 24

          (a+b)^2 = 49

          (a+b) = 7

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