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Mathematics 10 Online
OpenStudy (anonymous):

I need help with pre calc!

OpenStudy (anonymous):

OpenStudy (anonymous):

domain: what are the possibles value of x? It can be anything...The only thing you need to be careful is that denominator should not be equal to x...that is...x^2 -3x-4 not equal to 0

OpenStudy (anonymous):

when you solve x^2 -3x-4 not equal to 0, you will get x is not equal to -1 or 4

OpenStudy (anonymous):

so, the domain is all real numbers except -1 and 4... mathematically, domain belongs to (infinity ,-1) U (-1, 4) U (4, infinity)

OpenStudy (anonymous):

did u understand how i found out domain?

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

so , to find x-intercept substitute y=0, and to find y intercept substitute x=0...i hope you can do that

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