How do you find the x-intercepts and y-intercepts of trinomials. E.g.(x^2-10x+25) How do you find the x-intercepts and y-intercepts of trinomials. E.g.(x^2-10x+25) @Mathematics

Question

anonymous · Answer

well, for the y intercept simply set x to be 0 and solve for y. 
For the x intercpets i suggest you facrtor

mertsj · Answer

y=x^2-10x+25.  find the x intercepts by setting y = to 0.  That is:  0=x^2-10x+25.  Solve that equation.  That will be the x intercepts.  If you get only 1 answer, that indicates a point of tangency to the x axis.  If you get complex answers, that indicates that the parabola doesn't cross the x axis.

Find the y intercept by setting x = 0.  That is:  y = (0)^2 -10(0) =25.  That will be the y intercept.