How to find the vertex of a parabola from standard form

In this blog post, we will provide you with a step-by-step guide on How to find the vertex of a parabola from standard form.

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Completing the square for vertex form

Sal rewrites the equation y=-5x^2-20x+15 in vertex form (by completing the square) in order to identify the vertex of the corresponding parabola. If you're seeing this message, it means we're having trouble loading external resources

The Vertex of a Parabola

To find the vertex (h, k) of a parabola that is in standard form y = ax 2 + bx + c: Use h = -b/2a for finding h Substitute x = h in the given equation to find k.
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How to identify a parabola

Algebra

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