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Mathematics 28 Online
OpenStudy (kanwal32):

can anyone simplify this for me

OpenStudy (anonymous):

Post it!

OpenStudy (kanwal32):

\[\frac{ r^{10}-1 }{ r-1 }*\frac{ (1-r^{10})(r) }{ (r^{10})(1-r) }\]

OpenStudy (kanwal32):

=108

OpenStudy (anonymous):

Ok, First find the LCD

OpenStudy (anonymous):

We want to clear the fractions first, so find the LCD, so I know how to do this?

OpenStudy (kanwal32):

it multiplication (r us saying lcm)

OpenStudy (anonymous):

Ya lcm

OpenStudy (kanwal32):

but its multiplication

OpenStudy (anonymous):

LCD is just the lcm, but only looking at denominators, make sense?

OpenStudy (anonymous):

Right, it's multiplication. Or you can think of it as multiplying both sides by the denominator

OpenStudy (kanwal32):

this thing gets greater

OpenStudy (kanwal32):

@ganeshie8 can u tell a shorter way or less time consuming way to simplify this(i was able to do this but was taking time)

OpenStudy (anonymous):

Ya, it looks uglier than it is Now, carry out the expansion on each side to get rid of the ( )

OpenStudy (anonymous):

Alright, good luck, bye

OpenStudy (kanwal32):

i was able to do this but i want a way less time consuming or a trick

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