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Mathematics 22 Online
OpenStudy (anonymous):

Help please! http://prntscr.com/3d29tw

OpenStudy (anonymous):

@ZeHanz

OpenStudy (agent0smith):

First factor everything. And when dividing by a fraction, flip the fraction and multiply by the reciprocal.

OpenStudy (zehanz):

So use the rule: \(\dfrac{\frac{a}{b}}{\frac{c}{d}}=\dfrac{a}{b}\cdot\dfrac{d}{c}\), after factoring, as @agent0smith said!

OpenStudy (anonymous):

\[\frac{ a ^{2} + 5a + 4 }{ a ^{3}} \times \frac{ a ^{2} - 2a}{ a ^{2} + 3a + 2 }\]

OpenStudy (agent0smith):

Yes, now factor everything. And good job using the equation editor!

OpenStudy (anonymous):

Haha, thank you! And do you mind helping me factor it all?

OpenStudy (anonymous):

Wait, I think I got it.

OpenStudy (zehanz):

\(a^2+5a+4\) = (a+..)(a+..). The sum of the numbers on the dots is 5, their product is 4. Guess what they are?

OpenStudy (anonymous):

\[\frac{ (a + 4) (a - 2) }{ a ^{2} (a + 2)}\]

OpenStudy (zehanz):

Whoa! All in one go! You have found the right answer!

OpenStudy (anonymous):

Thank you so much ^-^ @ZeHanz @agent0smith

OpenStudy (agent0smith):

Wow, good job.

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