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September 5, 2015

Homework Help: Math

Posted by Dania on Saturday, November 20, 2010 at 12:14pm.

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with the second question, how the tutor came up with the answer w^4? What do we do with a positive exponent in the denominator when we bring the negative numerator down to the denominator?

Please see previous question:

Hello, I have two more rational exponent question that I wanted to verify please:

4x^3y^-2
_________
2x^-1y^4

= 2x^4y^6

is this correct?

2nd question:

[w^1 / w^-3]

my answer:

= [w^(1)(-4)/ w ^ (-3)(-4)]
= w^-4 / w^12
= w^12 / w^4
= w^3 / w

Is this right?





Math - drwls, Thursday, November 18, 2010 at 2:41pm
Both are wrong. You seem to have no idea at all how to handle exponents.

The answers are
2x^4 y^-6 and w^4.

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