Will give medal and become a fan!

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

Will give medal and become a fan!

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

anonymous · Answer

$$\sqrt{3} * \sqrt{21}$$

anonymous · Answer

3 square root of seven

anonymous · Answer

Square root of 21 is 4.58257695
Square root of 3 is 1.732050808.

anonymous · Answer

Multiply them and square the answer.

anonymous · Answer

So it would be 3 square root of seven ??

anonymous · Answer

yes

anonymous · Answer

What about this one?

Simplify:square root of 5 open parentheses 8 plus 3 square root of 6 close parentheses

anonymous · Answer

$$\sqrt{3} \times \sqrt{21} =  \sqrt{63} = \sqrt{3 \times 3 \times 7} = 3\sqrt{7}$$

@wildchild588 : Your question is answered with the working

anonymous · Answer

$$\sqrt{5}*(8+[3*\sqrt{6}])$$

cj49 · Answer

√(3) * √(21) = √(3 * 21) = √(63)

anonymous · Answer

The brackets are just another version of parenthesis, but I'm only trying to say to do 3+sqrt of 6 before anything else.

anonymous · Answer

These are the possible outcomes.

 8 square root of 5 end root plus 3 square root of 30

 5 square root of 10

 130

 None of the above

anonymous · Answer

Simplify the equation I gave you.

anonymous · Answer

So it would be 5 square root of 10