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jvg1231

factor 3a^2+10a+8

  • one year ago
  • one year ago

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  1. Kagome_gurl8
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    http://www.freemathhelp.com/factoring-calculator.php

    • one year ago
  2. Cassandr4
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    Didn't you just ask this?

    • one year ago
  3. jvg1231
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    your right.. my stupid math quiz online repeated the question, its just i cant go back and check my last question

    • one year ago
  4. jvg1231
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    thank you

    • one year ago
  5. Cassandr4
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    From @mathstuden55 's most excellent response: Write two sets of parentheses. First factor 3a^2: (3a )(a ) because (3a)(a) = 3a^2 Now you need two numbers that multiply to 8: 1 and 8 or 2 and 4 Now you have 4 possibilities as to how to place the 1 and 8 or the 2 and 4 (3a + 1)(a + 8) or (3a + 8)(a + 1) or (3a + 2)(a + 4) or (3a + 4)(a + 2) The way you know the right one is to do foil to these 4 choices and see which one gives you the original middle term, 10a. In reality, all you need to do is the OI part of foil becasue that's where the middle term , 10a, comes from.

    • one year ago
  6. precal
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    use slide and divide

    • one year ago
  7. precal
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    |dw:1354670770290:dw|slide 3 by multiplying it to 8

    • one year ago
  8. precal
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    |dw:1354670812324:dw|divide 3 back in

    • one year ago
  9. precal
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    |dw:1354670834353:dw|

    • one year ago
  10. jvg1231
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    thank you!

    • one year ago
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