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Put the quadratic into vertex form and state the coordinates of the vertex.

y=x^(2)+8x-16
Vertex Form: 
y=
Vertex: 
(◻,◻)

Put the quadratic into vertex form and state the coordinates of the vertex.\newliney=x2+8x16 y=x^{2}+8 x-16 \newlineVertex Form: y= y= \newlineVertex: (,) (\square, \square)

Full solution

Q. Put the quadratic into vertex form and state the coordinates of the vertex.\newliney=x2+8x16 y=x^{2}+8 x-16 \newlineVertex Form: y= y= \newlineVertex: (,) (\square, \square)
  1. Identify Vertex Form: Identify the vertex form of a parabola.\newlineThe vertex form of a parabola is y=a(xh)2+ky = a(x - h)^2 + k, where (h,k)(h, k) is the vertex of the parabola.
  2. Complete the Square: Complete the square to transform the given quadratic equation into vertex form.\newlineThe given quadratic equation is y=x2+8x16y = x^2 + 8x - 16.\newlineTo complete the square, we need to find a value that, when added and subtracted to the equation, forms a perfect square trinomial with the x2+8xx^2 + 8x part.\newlineThe value needed is (8/2)2=42=16(8/2)^2 = 4^2 = 16.
  3. Add and Subtract Value: Add and subtract the value found inside the equation.\newliney=x2+8x+161616y = x^2 + 8x + 16 - 16 - 16\newlineWe added and subtracted 1616 to create a perfect square trinomial while keeping the equation balanced.
  4. Rewrite with Perfect Square: Rewrite the equation with the perfect square trinomial and the constant term.\newliney=(x2+8x+16)32y = (x^2 + 8x + 16) - 32\newlineNow, the expression in the parentheses is a perfect square trinomial.
  5. Factor Perfect Square: Factor the perfect square trinomial.\newliney=(x+4)232y = (x + 4)^2 - 32\newlineThe factored form of x2+8x+16x^2 + 8x + 16 is (x+4)2(x + 4)^2.
  6. Write in Vertex Form: Write the equation in vertex form and state the coordinates of the vertex.\newlineThe vertex form of the equation is y=(x+4)232y = (x + 4)^2 - 32.\newlineThe vertex (h,k)(h, k) is found by considering the form y=a(xh)2+ky = a(x - h)^2 + k. Here, h=4h = -4 and k=32k = -32.\newlineSo, the coordinates of the vertex are (4,32)(-4, -32).

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