Vertex form is another form of a quadratic equation. The standard form of a quadratic equation is ax 2 + bx + c. The vertex form of a quadratic equation is a (x - h) 2 + k where a is a constant
Write the parabola equation in the vertex form: y = a· (x-h)² + k; Expand the expression in the bracket: y = a· (x² - 2·h·x + h²) + k; Multiply the terms in the parenthesis by a: y
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