3 years ago

Simplify:

Mathematics

1 answer:

My name is Ann [436]3 years ago

4 0

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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