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# How do I simplify this??? watch

1. Simplify: 3x(3x^1/3)^3

The answers 81 but how do you get this?
2. (Original post by kitkat132000)
Simplify: 3x(3x^1/3)^3

The answers 81 but how do you get this?
Is that first x a multiplication symbol or the variable x?
Btw you can't "simplify" something and get an answer. After simplifying something you just get a less complex version of the equation/expression.
3. (Original post by GimmeAName)
Is that first x a multiplication symbol or the variable x?
Btw you can't "simplify" something and get an answer. After simplifying something you just get a less complex version of the equation/expression.
It's the variable x
4. Okay,assuming both xs are variables then by simplifying you'd get:
(3x)(3x) as the ^1/3 would cancel out with the ^3 outside of the brackets.
(3x)(3x) would then give you 9x^2 which would be the simplified version. However if you said that the "answer" is 81 you'd equate both:
9x^2=81 making x=1

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