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

Question

asked Mar 20, 2017 60.3k views

1 Answer

Paj · Answer 1 · 2017-03-27T01:52:27+0000

Answer

3 square root of 7

Step-by-step 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