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The equation of a parabola is y=x2+4x4y = x^2 + 4x - 4. Write the equation in vertex form.\newlineWrite any numbers as integers or simplified proper or improper fractions.\newline______

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Q. The equation of a parabola is y=x2+4x4y = x^2 + 4x - 4. Write the equation in vertex form.\newlineWrite any numbers as integers or simplified proper or improper fractions.\newline______
  1. Identify Vertex Form: Identify the vertex form of a parabola. The vertex form of a parabola is given by y=a(xh)2+ky = a(x - h)^2 + k, where (h,k)(h, k) is the vertex of the parabola.
  2. Complete Square Transformation: Complete the square to transform the given equation into vertex form.\newlineWe have the equation y=x2+4x4y = x^2 + 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+4xx^2 + 4x. This number is (4/2)2=22=4(4/2)^2 = 2^2 = 4. We add and subtract 44 within the equation.
  3. Add and Subtract Number: Add and subtract the number found in Step 22 to the equation.\newliney=x2+4x+444y = x^2 + 4x + 4 - 4 - 4\newlineNow we have added 44 and subtracted 44, keeping the equation balanced.
  4. Rewrite Equation: Rewrite the equation grouping the perfect square trinomial and combining the constants. \newliney=(x2+4x+4)8y = (x^2 + 4x + 4) - 8\newlineNow we have a perfect square trinomial and a constant.
  5. Factor Perfect Square Trinomial: Factor the perfect square trinomial.\newliney=(x+2)28y = (x + 2)^2 - 8\newlineThe factored form of x2+4x+4x^2 + 4x + 4 is (x+2)2(x + 2)^2, and we bring down the constant 8-8.
  6. Final Equation: Write the final equation in vertex form.\newlineThe equation in vertex form is y=(x+2)28y = (x + 2)^2 - 8.

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