Question

Given the expression,f(X)=x-3 / x^2-25 , choose the correct x coordinate of the x-intercept.

Answer 1

The x intercept(s) occur  when f(x) = 0

so we have (x - 3)( x^2 - 25)  = 0

So x - 3 = zero  and  x = therefore = 3.

The answer is the third choice 3