The equation of a parabola is y=x2−2x−5. Write the equation in vertex form.Write any numbers as integers or simplified proper or improper fractions.______
Q. The equation of a parabola is y=x2−2x−5. Write the equation in vertex form.Write any numbers as integers or simplified proper or improper fractions.______
Identify Vertex Form: Identify the vertex form of a parabola. The vertex form of a parabola is given by y=a(x−h)2+k, where (h,k) is the vertex of the parabola.
Complete the Square:Complete the square to rewrite the equation y=x2−2x−5 in vertex form.First, we need to complete the square for the x-terms. To do this, we take the coefficient of the x-term, divide it by 2, and square it. For the equation y=x2−2x−5, the coefficient of x is −2. Dividing it by 2 gives us −1, and squaring it gives us 1. We will add and subtract this value inside the equation.
Add Square Value: Add and subtract the square of half the x-coefficient inside the equation.We have y=x2−2x+1−1−5. We added and subtracted 1 to complete the square.
Group and Combine: Group the perfect square trinomial and combine the constants.Now we group the terms to form a perfect square trinomial and combine the constants: y=(x2−2x+1)−1−5, which simplifies to y=(x−1)2−6.
Write in Vertex Form: Write the equation in vertex form.The equation in vertex form is y=(x−1)2−6. This is the vertex form of the given parabola, where the vertex is (1,−6).
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