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7 March, 01:43

Which technique is most appropriate to use to solve each equation? 1. (x+4) (x-9) = 0, 2. 4x² = 20

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  1. 7 March, 03:32
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    The first one, because the second one is the answer and you can't solve the answer like that.

    (x+4) (x-9) : 0

    x (square) - 9x+4x-36:0

    combine terms.

    so you get x (square) - 5x-36:0

    and solve the rest for the equation
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