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Mathematics 8 Online
jagr2713 (jagr2713):

Medal&Fan!!!!!!!!!!

jagr2713 (jagr2713):

http://prntscr.com/45y85h

jagr2713 (jagr2713):

@ganeshie8 @Hero @KlOwNlOvE @radar @OOOPS

OpenStudy (anonymous):

can exponents be negative @jagr2713 ?

jagr2713 (jagr2713):

yes

OpenStudy (anonymous):

\[\sqrt[3]{1^{6}}\]

jagr2713 (jagr2713):

dont give me the answer. can you explain please

OpenStudy (anonymous):

im reading while doing this been awhile since i did this that wasnt the answer thats what itll be when you change the exponent to positive

jagr2713 (jagr2713):

ohoh ik how to do it from here i think

OpenStudy (kropot72):

You can use the following law to simplify the denominator: \[\large \sqrt[b]{a}=x ^{\frac{a}{b}}\]

jagr2713 (jagr2713):

doesnt it change to x^6/3

jagr2713 (jagr2713):

wow u just said the krop

jagr2713 (jagr2713):

is that right

jagr2713 (jagr2713):

|dw:1406228858615:dw|

OpenStudy (kropot72):

The denominator becomes: \[\Large \sqrt[3]{x ^{-6}}=x ^{\frac{-6}{3}}\]

jagr2713 (jagr2713):

so thats the answer right

OpenStudy (kropot72):

Not really. At this stage you have: \[\Large\frac{1}{\sqrt[3]{x ^{-6}}}=\frac{1}{x ^{\frac{-6}{3}}}\] You can simplify the denominator further. Can you do that before the final step?

jagr2713 (jagr2713):

i dont think so and the one get removed and becomes |dw:1406229390064:dw|

OpenStudy (kropot72):

What is: \[\Large \frac{-6}{3}=?\]

jagr2713 (jagr2713):

ohohoho -2

OpenStudy (kropot72):

Correct: So now we have: \[\Large \frac{1}{\sqrt[3]{x ^{-6}}}=\frac{1}{x ^{-2}}\] Now multiply numerator and denominator by x^ to get the solution: \[\Large \frac{1}{x ^{-2}}=\frac{1\times x ^{2}}{x ^{-2} \times x ^{2}}=you\ can\ calculate\]

OpenStudy (kropot72):

by x^2 *

jagr2713 (jagr2713):

i have to calculate it now

OpenStudy (kropot72):

Remember that:\[\Large x ^{a} \times x ^{-a}=1\]

jagr2713 (jagr2713):

idk lol

OpenStudy (kropot72):

\[\Large \frac{1}{x ^{-2}}=\frac{1\times x ^{2}}{x ^{-2} \times x ^{2}}=x ^{2}\]

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