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hrcheerlove Group Title

Factor completely: 1)) a^2 - a - 20 2)) x^2 - 5x - 14 3)) b^2 + 12b + 32

  • one year ago
  • one year ago

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  1. ByteMe Group Title
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    Here's a some hint to do these type of factoring problems: 1-If the last term is negative (like #1 and 2), your factors will most likely be of the form (x+y)(x-z) 2-If the last term is positive, then your factors will be of the form (x+y)(x+z) OR (x-y)(x-z)

    • one year ago
  2. ByteMe Group Title
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    So for example in #1, since the last term is -20, then your factors will look like this: (a + ??)(a - ???)

    • one year ago
  3. ByteMe Group Title
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    now think of two numbers that multiply to -20 AND add up to -1....

    • one year ago
  4. hrcheerlove Group Title
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    Okay I got the first two I need help with the 3rd one

    • one year ago
  5. hrcheerlove Group Title
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    @ByteMe

    • one year ago
  6. ByteMe Group Title
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    ok.. since the last term is +32, your factors will look like this: (b + ??) (b + ???) what two numbers can you think of that multiplies to 32 AND add up to 12 ?

    • one year ago
  7. hrcheerlove Group Title
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    Nvm I figured it out ! Thank you !

    • one year ago
  8. ByteMe Group Title
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    ok...

    • one year ago
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