Ask a New Question

Question

Find the vertex for f(x)=-5x^2-6x=3
13 years ago

Answers

Steve
It appears that the problem should read:
f(x)=-5x^2-6x+3

complete the square:

-5x^2 - 6x + 3
-5(x^2 + 6/5 x) + 3
-5(x^2 + 6/5 x + 9/25) + 3 + 5*9/25
f(x) = -5(x+3/5)^2 + 24/5

vertex is at (-3/5,24/5)
13 years ago

Related Questions

How would I find the vertex of the parabola y = x^2 – 2x + 4 ?? could some one explain the method... How do you find the vertex of a quadratic function? What are the steps to solving a quadratic fun... I need to find the vertex and make a graph using quadratics. y=xsquared+11x+10 how do i find the vertex for this type of problem -2(x+1)^2 Find the vertex of y^2 + 4y + 2x +10 = 0. Use completing the square to put the equation into standar... Find the vertex for f(X)=-x^2+8x+6 I came up with (4,22)but i'm not sure. If so, what is the line... how do I find the vertex of y = x^2 - 18? I got -9, -81 but that seems impossible I think I'm missin... x^2-2x+3y-8 Find the vertex and axis of symmetry. I need to find the vertex of the graph: f(x)=2/5x^2-4x+14 I know that in order to find what x equa... How do you find your vertex when the equation is y= (x+3)(x-7)
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use