Question 889849
Factor it and complete the square to put into standard form.  Read vertex from the standard form equation and find x-intercepts by solving for f(x)=0.


Refer to <a href="http://www.algebra.com/tutors/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">Completing the Square to Solve General Quadratic Equation </a>


{{{graph(350,350,-35,2,-35,2,2x^2+16x-2)}}}