Question

Anyone a math Genius?
simplify each radical expression.
-21_/27x^9

Answer 1

ok so according to comments, question is

`-21\sqrt{27x^(9)}`
remember that

`√(xy)`=
`√(x)` times
`√(y)`
and
`\sqrt{yx^(2)}`=
`x√(y)`
so

`-21\sqrt{27x^(9)}`=
`-21√(27)\sqrt{x^(9)}` =
`-21√(9)√(3)\sqrt{x^(2)}\sqrt{x^(2)}\sqrt{x^(2)}\sqrt{x^(2)}√(x)`=
`-21(3)√(3)(x)(x)(x)(x)√(x)`=

`-63x^(4)√(3)√(x)`=
`-63x^(4)√(3x)`