## anonymous 3 years ago how to simplify a radical expression. ex: Simplify the prob 3Sqrrt(-243x^3y^10) i already know nSqrrt(a) * nSqrrt(B) = nSqrrt(AB)

1. anonymous

ok so $$\sqrt[3]{x^3}=x$$ for a start

2. anonymous

and since $$243=3^5$$ we have $$\sqrt[3]{3^5}=3\sqrt[3]{3^2}$$

3. anonymous

finally $$\sqrt[3]{y^{10}}=3\sqrt[3]{y}$$