SOLUTION: Hello - I am having trouble solving the two equations below where i have to find the domain. I am using the quadratic formula to solve them. Because i thought it would be the e

Question 678975: Hello -
I am having trouble solving the two equations below where i have to find the domain. I am using the quadratic formula to solve them. Because i thought it would be the easiest way to solve it.. But i am running into errors obtaining the final answer. Can someone explain.
1) f(x) = (x^4-8x^3+9)/3x^2-5x-28
2) f(x) = x^2+3x-13
Thanks
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
1) where the denominator cannot be zero

(3x+7)(x-4) = 0
Domain is all real numbers except 4 and -
...

...
2) domain is all real numbers

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