Solution
Given : $$(x^2 + y^2) = 100$$ and $$xy = 22$$
Using $$(x + y)^2 = x^2 + y^2 + 2xy$$
=> $$(x + y)^2 = 100 + (2 \times 22)$$
=> $$(x + y) = \sqrt{144} = 12$$
=> Ans - (A)
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