Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2+14x+24Vertex 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.The given equation is y=x2+14x+24.To complete the square, we need to find a value that, when added and subtracted to the equation, forms a perfect square trinomial.The coefficient of x is 14, so we take half of it, which is 7, and then square it to get 49.We add and subtract 49 inside the equation to complete the square.
Add and subtract: Add and subtract 49 inside the equation.y=x2+14x+49−49+24Now, group the perfect square trinomial and the constants.y=(x2+14x+49)−25
Factor perfect square: Factor the perfect square trinomial.The perfect square trinomial x2+14x+49 can be factored into (x+7)2.So the equation becomes:y=(x+7)2−25
Write in vertex form: Write the equation in vertex form and state the coordinates of the vertex.The vertex form of the equation is y=(x+7)2−25.The vertex (h,k) is the point where the equation is in the form (x−h)2+k.In our equation, h is −7 and k is −25, so the vertex is (−7,−25).
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