Find the domain of f(x)=5x-1/x^2+8x+15?
the domain of rational functions is all reals except where the denominator is zero.
x^2+8x+15 = (x+3)(x+5)
So, I guess you can work it from there, right?
x^2+8x+15 = (x+3)(x+5)
So, I guess you can work it from there, right?