Question

(√x+√y)² = x+y + (____?____)

Answer 1

Answer:

$(2 \sqrt{x} \sqrt{y} )$

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Answer 2

By the identity :- (a+b)² = a²+b²+2ab

${( \sqrt{x} + \sqrt{y}) }^{2}$

$= {( \sqrt{x} )}^{2} + {( \sqrt{y}) }^{2} + 2 \sqrt{xy}$

$= x + y + 2 \sqrt{xy}$