How do u simplify -8sqrt2/2187 ?? I dont need decimal form, how do I keep it in radical form?
I will assume you mean this: -8 sqrt(2187)
= -8 sqrt (81*27) = -8 (9) sqrt(27) = -72 sqrt (27) = -72 sqrt(9*3) = -72(3) sqrt (3) = - 216 sqrt3
\(-8\sqrt{\frac{2}{2187}}\)
=\(\frac{-8\sqrt2}{27\sqrt3}\)
=\(-\frac{2^32^{\frac{1}{2}}}{3^33^{\frac{1}{2}}}\)
=\(-\frac{2^{\frac{7}{2}}}{3^{\frac{7}{2}}}\)
\(-(\frac{2}{3})^{\frac{7}{2}}\)