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11-05-2017
Mathematics

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

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floralamas floralamas

11-05-2017

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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