What is the vertex of #y= 2x^2 + 8x − 4#? Algebra Quadratic Equations and Functions Quadratic Functions and Their Graphs 1 Answer Sonnhard May 27, 2018 #x=-2,y=-16# Explanation: we have #f(x)=2(x^2+4x+4-4-4)=2(x+2)^2-16# Answer link Related questions What are the important features of the graphs of quadratic functions? What do quadratic function graphs look like? How do you find the x intercepts of a quadratic function? How do you determine the vertex and direction when given a quadratic function? How do you determine the range of a quadratic function? What is the domain of quadratic functions? How do you find the maximum or minimum of quadratic functions? How do you graph #y=x^2-2x+3#? How do you know if #y=16-4x^2# opens up or down? How do you find the x-coordinate of the vertex for the graph #4x^2+16x+12=0#? See all questions in Quadratic Functions and Their Graphs Impact of this question 1649 views around the world You can reuse this answer Creative Commons License