cupcakediamond2017
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  • 09-03-2017
  • Mathematics
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please help me with number 18

please help me with number 18 class=

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schiou
schiou schiou
  • 09-03-2017
in the 3rd row where it says "3x(x-3)(x+3)", it should be "3x(x+3)(x+3)" and the solutions should be -3,-3,0
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