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HelloKitty17

  • one year ago

MEDAL Factor completely -9a2 + 18a – 27.

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  1. HelloKitty17
    • one year ago
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    Use factor by grouping

  2. hybrik
    • one year ago
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    You can also factor normally : -9(a^2-2a+3)

  3. HelloKitty17
    • one year ago
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    a.-1(9a2 - 18a + 27) b. -9a(a2 - 2a + 3) c.-9(a2 + 2a - 3) d. -9(a2 - 2a + 3)

  4. hybrik
    • one year ago
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    D

  5. mathstudent55
    • one year ago
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    To factor always start by trying to factor a common factor.

  6. hybrik
    • one year ago
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    @mathstudent55 I explained.

  7. hybrik
    • one year ago
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    You have to find a common factor in all three, which is -9

  8. hybrik
    • one year ago
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    To get the answer as I shown above [ You can also factor normally : -9(a^2-2a+3) ]

  9. HelloKitty17
    • one year ago
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    so it is D final answer

  10. hybrik
    • one year ago
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    By normally i meant grouping, yes D

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