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21 November, 10:56

The vertex form of the equation of a parabola is y = (x + 3) 2 + 53. What is the standard form of the equation? A. y = x2 + 53x + 42 B. y = x2 + 6x + 62 C. y = x2 + 3x + 53 D. y = 6x2 + 9x + 62

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  1. 21 November, 11:16
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    Y = (x + 3) ² + 53

    y = (x + 3) (x + 3) + 53

    y = (x (x + 3) + 3 (x + 3)) + 53

    y = (x (x) + x (3) + 3 (x) + 3 (3)) + 53

    y = (x² + 3x + 3x + 9) + 53

    y = (x² + 6x + 9) + 53

    y = x² + 6x + 9 + 53

    y = x² + 6x + 62

    The answer is B.
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