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Mathematics 15 Online
OpenStudy (anonymous):

help me with simplifying an equation

OpenStudy (anonymous):

(15x^3/25-x^2)/(3x^5/5-x)

OpenStudy (anonymous):

that is the equation I need help with

OpenStudy (anonymous):

First use this formula a^2 - b^2 = (a - b) * (a + b) So 25 - x^2 = 5^2 - x^2 = (5 - x)*(5 + x)

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

what else should I do?

OpenStudy (anonymous):

|dw:1402442931912:dw|

OpenStudy (anonymous):

We just cancel common factors from numerator &denominator

OpenStudy (anonymous):

so 5/(5+x)*x^2 is the final answer?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

u r welcome :)

OpenStudy (anonymous):

are you still here?

OpenStudy (anonymous):

can't we simplify it more by multiplying x^x by (5+x)?

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