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anonymous

  • one year ago

Simplify: (4b + 3) (2b - 5) a: 8b2 - 14b - 15 b: 8b2 + 9b - 15 c: 8b2 + 6b + 15 d: 8b2 - 15

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  1. anonymous
    • one year ago
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    what do you think u should do?

  2. anonymous
    • one year ago
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    multiply 4b and 2b

  3. anonymous
    • one year ago
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    Correct!

  4. anonymous
    • one year ago
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    you need to apply the FOIL/distribution method

  5. anonymous
    • one year ago
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    the answer is B right?

  6. anonymous
    • one year ago
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    i don't know FOIL

  7. anonymous
    • one year ago
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    |dw:1436275675763:dw|

  8. anonymous
    • one year ago
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    first multiply this

  9. anonymous
    • one year ago
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    4b * 2b = ? 4b * -5 = ?

  10. anonymous
    • one year ago
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    8b-20b

  11. anonymous
    • one year ago
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    correct

  12. anonymous
    • one year ago
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    ok

  13. anonymous
    • one year ago
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    |dw:1436275826552:dw|

  14. anonymous
    • one year ago
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    Now this… what is 3 * 2b? What is 3 * -5? And that is FOIL

  15. anonymous
    • one year ago
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    6b-15

  16. anonymous
    • one year ago
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    First Outer Inner Last

  17. anonymous
    • one year ago
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    ok i'll try and remember that

  18. anonymous
    • one year ago
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    |dw:1436275891117:dw|

  19. anonymous
    • one year ago
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    combine like terms and you're done!

  20. anonymous
    • one year ago
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    |dw:1436275929301:dw|

  21. anonymous
    • one year ago
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    but that's not an answer choose

  22. anonymous
    • one year ago
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    ok

  23. anonymous
    • one year ago
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    |dw:1436275974484:dw|

  24. anonymous
    • one year ago
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    the answer is C

  25. anonymous
    • one year ago
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    thanks

  26. anonymous
    • one year ago
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    Which makes: 8b^2 - 20b + 6b - 15 8b^2 - 14b - 15

  27. anonymous
    • one year ago
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    Correct.

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