Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2+10x−2Vertex Form: y=Vertex: (□,□)
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.
Factor out coefficient: Factor out the coefficient of the x2 term if it is not 1. In this case, the coefficient of x2 is 1, so we do not need to factor anything out.
Find square of half: Find the square of half the coefficient of the x term to complete the square. Half of the coefficient of x is 210, which is 5. Squaring 5 gives us 25.
Add and subtract square: Add and subtract the square of half the coefficient of x inside the equation.y=x2+10x+25−25−2This allows us to form a perfect square trinomial while keeping the equation balanced.
Rewrite equation grouping: Rewrite the equation grouping the perfect square trinomial and combining the constants. y=(x2+10x+25)−27
Factor perfect square trinomial: Factor the perfect square trinomial. y=(x+5)2−27
Write in vertex form: Write the equation in vertex form.Vertex Form: y=(x+5)2−27
Identify vertex coordinates: Identify the coordinates of the vertex.The vertex form of the equation is y=a(x−h)2+k. Comparing this with our equation y=(x+5)2−27, we find that h=−5 and k=−27.Therefore, the coordinates of the vertex are (−5,−27).
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