Question

How did this
$2 \sqrt{18}$
come??
Please explain.

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Answer 1

Answer:

(a+b)² = a² +b² +2ab

(√6 + √3)² = 6 +3 + 2√6√3 = 6 + 3 + 2√18

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Answer 2

Answer:

See this picture and you will understand...

Step-by-step explanation:

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