Put the quadratic into vertex form and state the coordinates of the vertex.y, equals, x, squared, plus, 8, x, plus, 12y=x 2 +8x+12
Question
Put the quadratic into vertex form and state the coordinates of the vertex.
Given the equation:
Solution
The vertex form of a quadratic is given by y=a(x-h)²+k, where (h,k) is the vertex of the parabola.
To convert the given quadratic y=x²+8x+12 into vertex form, we complete the square:
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In the equation y=x²+8x+12, the coefficient of x² is 1, the coefficient of x is 8, and the constant term is 12.
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To complete the square, we take half of the coefficient of x, square it, and add and subtract that value inside the square. Half of 8 is 4, and 4² is 16. So we add and subtract 16 inside the square:
y=(x²+8x+16-16)+12
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This simplifies to:
y=((x+4)²-16)+12
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Which further simplifies to:
y=(x+4)²-4
So, the given quadratic in vertex form is y=(x+4)²-4.
The coordinates of the vertex (h,k) are given by the values that make the square in the equation zero. In this case, h=-4 and k=-4. So the vertex of the parabola is (-4,-4).
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