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Mathematics 18 Online
EndersWorld:

Any rational exponents

EndersWorld:

\[5^{1/3}*50^{1/3}\]

EndersWorld:

Multiply each side by \[3\]

EndersWorld:

\[5*50=250\]

EndersWorld:

@Hero

Hero:

What do you mean "each side". Multiplying by each side only applies to equations.

EndersWorld:

Ehhh... multiple both exponents by 3

Hero:

Anytime you post a problem, always include the exact instructions from your text.

EndersWorld:

“Simplify each expression without any rational exponents”

Hero:

Well, first off, you can easily just re-write the expression as: \\((5 \cdot 50)^{1/3}\) by way of this rule: \(a^{x}b^{x} = (ab)^x\)

EndersWorld:

\[250^{1/3}\]

Hero:

Yep, but now you have to reduce it until there is no rational exponent

EndersWorld:

\[250/3\]?

Hero:

I wonder why you are so confused now on what to do with the 3 in the denominator of the exponent even though I showed you the rule: \(\sqrt[n]{a^b} = a^{b/n}\)

EndersWorld:

Been a stressful day... spent 4 hours talking to social workers.. my nerves are shot.

Hero:

Can you screenshot the instructions again. As currently written it is not possible to reduce the expression and completely eliminate the fractional exponent.

EndersWorld:

1 attachment
Hero:

Well, you can always convert the remaining fraction to a root.

EndersWorld:

\[\sqrt[3]{50}\]

Hero:

Don't know why you changed 250 to 50

Hero:

What that your intention or is that more remnants of the stressful day?

EndersWorld:

More remnants I’m afraid... didn’t even notice.

EndersWorld:

\[\sqrt[3]{250}\]

Hero:

Okay, now you have to factor until you find a cube as a factor of 250.

EndersWorld:

\[5\sqrt2\]

Hero:

Skipping steps lead to wrong answers.

EndersWorld:

Doesn’t seem right

Hero:

Definitely not correct.

EndersWorld:

I didn’t skip steps.. did wrong steps..

Hero:

Explain how you even got to that in the first place.

EndersWorld:

Factoring down...

Hero:

Show your work before you post a possible end result

Hero:

I want to see what you did explicitly every time.

EndersWorld:

I don’t even know what I am doing right now..

EndersWorld:

1 attachment
Hero:

Factor 250 until you find a cube: (1)(250) (2)(125) (125 is a cube so:) \((2)(5^3)\)

Hero:

That's the steps you should be posting

Hero:

(25)(10) is not the correct 1st step when factoring to find cubes and m's and n's

Hero:

If you start with (25)(10) you may never find the cube

EndersWorld:

I didn’t.

Hero:

I gave you a huge hint.

Hero:

At this point you should have \(\sqrt[3]{(2)(5)^3}\) Which of course breaks down to \(\sqrt[3]{2}\sqrt[3]{5^3}\) And that simplifies to just \(5\sqrt[3]{2}\)

EndersWorld:

I’m so done...

EndersWorld:

Literally about to cry..

Hero:

For what reason?

EndersWorld:

Life...

EndersWorld:

I’ll be back.

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