Francisco and Ryan are stuck simplifying radical expressions...

Question

undeadknight26 · Answer

attachment

anonymous · Answer

I have no clue how to do this...sorry :/

undeadknight26 · Answer

Thanks for trying though @Kim21 :)

anonymous · Answer

:)

undeadknight26 · Answer

@SolomonZelman Sire...Ma #1 gun :p
Its all up to you now XD

solomonzelman · Answer

you would have to firstly assume that they both were correct in their simplifications. Their expressions, neither of them, is simplified.

to see if they are equivalent: this is what we would do:

undeadknight26 · Answer

Yosh.

solomonzelman · Answer

for Francisco:

$\large\color{black}{ x^{1/2}~/~x^{3/18}    }$
$\large\color{black}{ x^{9/18}~/~x^{3/18}    }$
$\large\color{black}{ x^{9/18~~-~~3/18}   }$
$\large\color{black}{ x^{6/18}   }$
$\large\color{black}{ x^{1/3}   }$

solomonzelman · Answer

can you simplify Ryans expression?

solomonzelman · Answer

I will need to depart for a couple of minutes, excuse me

undeadknight26 · Answer

^27sqrtx^9?

solomonzelman · Answer

yes. sqrt{x^9}
(I am back btw)

solomonzelman · Answer

$\large\color{black}{ \sqrt{x^9}=\sqrt[2]{x^9} }$

(have to know when the number outside under, on the back of the root is unspecified, it is a 2)

$\large\color{black}{ \sqrt[2]{x^9}=x^{9/2} }$

solomonzelman · Answer

I am blind

solomonzelman · Answer

it was 27th roots

solomonzelman · Answer

$\large\color{black}{ \sqrt[27]{x^9}=x^{9/27}=x^{1/3} }$

solomonzelman · Answer

excuse me for the err, and yes, they are both dealing with 2 expressions of equivalent value

undeadknight26 · Answer

Aye see...

solomonzelman · Answer

need more help on this one?

undeadknight26 · Answer

Yeah: Describe if Francisco and Ryan started with equivalent expressions or if they started with expressions that are not equal.
What exactly would i say for that?

solomonzelman · Answer

Assuming that they haven't made any errors in their math [because if we allow the fact that they can error, then we won't be able to tell what they started from], we can see that they started dealing with 2 expressions that are not equivalent to each other.

solomonzelman · Answer

this point, but in your own words. don't forget to explain how you simplfiied them, by doing what? ...

undeadknight26 · Answer

Solving the expression?

solomonzelman · Answer

we simplified it, didn't we?

solomonzelman · Answer

simplfiied both of them.

undeadknight26 · Answer

Yup yup thanks for your hard work sire i get it now :)

solomonzelman · Answer

are you sure sure?

solomonzelman · Answer

because if there is any trouble, I can help you. But if there is trouble we would need to actually know that there is trouble....

solomonzelman · Answer

.....