Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2−12x+20Vertex Form: y=Vertex: (□,□)
Identify Vertex Form: Identify the vertex form of a parabola.The vertex form of a parabola is y=a(x−h)2+k, where (h,k) is the vertex of the parabola.
Complete the Square:Complete the square to rewrite the quadratic equation in vertex form.Given equation: y=x2−12x+20To complete the square, we need to find a value that makes x2−12x+___ a perfect square trinomial.The value needed is (212)2=62=36.
Add and Subtract Values: Add and subtract the value found inside the equation.y=x2−12x+36−36+20Now, we have added 36 to complete the square, but we must also subtract 36 to keep the equation balanced.
Rewrite Equation: Rewrite the equation with the perfect square trinomial and the constants combined.y=(x2−12x+36)−16y=(x−6)2−16Now the equation is in vertex form.
Identify Parabola Vertex: Identify the vertex of the parabola.The vertex form of the equation is y=(x−6)2−16.Comparing this with the vertex form y=a(x−h)2+k, we find that h=6 and k=−16.Therefore, the vertex of the parabola is (6,−16).
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