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24 May, 23:31

Complete the square to determine the maximum or minimum value of the function defined by the expression. x2 + 30x + 21 A) maximum value at 15 B) maximum value at 30 C) maximum value at - 15 D) minimum value at - 204

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  1. 24 May, 23:55
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    X^2 + 30x + 21

    = (x + 15) ^2 - 225 + 21

    = (x + 15) ^2 - 204

    Its D minimum at - 204
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