How do you find the domain of f(x) = (2x)/(x^2 + x - 6?

1 Answer
Jim G.
Apr 5, 2017

x inRR,x!=-3,x!=2

Explanation:

The denominator of f(x) cannot be zero as this would make f(x) undefined. Equating the denominator to zero and solving gives the values that x cannot be.

"solve "x^2+x-6=0rArr(x+3)(x-2)=0

rArrx=-3" or "x=2;larrcolor(red)" values x cannot be"

"domain is " x inRR,x!=-3,x!=2

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