milbanc00 milbanc00
  • 25-01-2021
  • Mathematics
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Year 10
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14/38 Marks
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Expand and simplify (x + 3)(x - 3)(3x + 2)

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txnoora
txnoora txnoora
  • 25-01-2021

Answer:

=3x³+2x²−27x−18

Step-by-step explanation:

(x+3)(x−3)(3x+2)

=((x+3)(x−3))(3x+2)

=((x+3)(x−3))(3x)+((x+3)(x−3))(2)

=3x³−27x+2x²−18

=3x³+2x²−27x−18

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