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Answered

Simplify:


square root of 3 times square root of 21


square root of 24


square root of 63


3 square root of 7


None of the above

Verified Answer :

smmwaite

Answer

3 square root of 7



Explanation

square root of 3 times square root of 21

√3 × √21 = √(3×21)

                  = √63

                  = √(9×7)

                  = √9 × √7

                    = 3 × √7

                   = 3√7

The answer is 3 square root of 7


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