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Mathematics 21 Online
OpenStudy (anonymous):

Simplify 4√7*3

OpenStudy (anonymous):

If the equation is 4√(7*3) = 4√21 = 18.33

OpenStudy (anonymous):

If the equation is (4√7) * 3 = 12√3 = 31.75

OpenStudy (anonymous):

how is it 12√3

OpenStudy (anonymous):

4 * 3 = 12

OpenStudy (anonymous):

Which equation were you looking at?

OpenStudy (anonymous):

the 2nd one and what about the 7

OpenStudy (anonymous):

it stays the same, since it is a radical all by itself.

OpenStudy (anonymous):

oh ok so that works for √45/√28

OpenStudy (anonymous):

you jus multiply the denominator

OpenStudy (anonymous):

That one is different. (3√(5/7))/2

OpenStudy (anonymous):

√45 = √(9 *5) = 3√5

OpenStudy (anonymous):

√28 = √(4 * 7) = 2√7

OpenStudy (anonymous):

\[\frac{(3\sqrt{\frac{ 5 }{ 7 }})}{ 2 }\]

OpenStudy (anonymous):

so how would that go do i simplify that or do i leave it like that

OpenStudy (anonymous):

that is it simplified

OpenStudy (anonymous):

unless you want the answer about 1.27

OpenStudy (anonymous):

ohk ohk thank you

OpenStudy (anonymous):

Your welcome! :)

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