The equation of a parabola is y=x2+4x−4. 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+4x−4. 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 Square Transformation:Complete the square to transform the given equation into vertex form.We have the equation y=x2+4x−4. To complete the square, we need to find a number that, when added and subtracted to the equation, forms a perfect square trinomial with x2+4x. This number is (4/2)2=22=4. We add and subtract 4 within the equation.
Add and Subtract Number: Add and subtract the number found in Step 2 to the equation.y=x2+4x+4−4−4Now we have added 4 and subtracted 4, keeping the equation balanced.
Rewrite Equation: Rewrite the equation grouping the perfect square trinomial and combining the constants. y=(x2+4x+4)−8Now we have a perfect square trinomial and a constant.
Factor Perfect Square Trinomial: Factor the perfect square trinomial.y=(x+2)2−8The factored form of x2+4x+4 is (x+2)2, and we bring down the constant −8.
Final Equation: Write the final equation in vertex form.The equation in vertex form is y=(x+2)2−8.
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