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Please help me with this math question!

Please help me with this math question!-example-1

1 Answer

6 votes
1) Change radical forms to fractional exponents using the rule:
The nth root of "a number" = "that number" raised to the reciprocal of n.
For example

\sqrt[n]{3} = 3^{ (1)/(n) }.

The square root of 3 (
√(3)) = 3 to the one-half power (
3^{ (1)/(2) }).
The 5th root of 3 (
\sqrt[5]{3}) = 3 to the one-fifth power (
3^{ (1)/(5) }).

2) Now use the product of powers exponent rule to simplify:
This rule says
a^(m) a^(n) = a^(m+n). When two expressions with the same base (a, in this example) are multiplied, you can add their exponents while keeping the same base.

You now have
(3^{ (1)/(2) })*(3^{ (1)/(5) }). These two expressions have the same base, 3. That means you can add their exponents:

(3^{ (1)/(2) })(3^{ (1)/(5) })\\ = 3^{((1)/(2) + (1)/(5)) }\\ = 3^{(7)/(10)}

3) You can leave it in the form
3^{(7)/(10)} or change it back into a radical
\sqrt[10]{3^7}


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Answer:
3^{(7)/(10)} or
\sqrt[10]{3^7}
User Sandeep Malik
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