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anonymous

  • one year ago

I'll FAN & MEDAL!!! Factor the expression 8x^3y − 8x^2y − 30xy.

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  1. anonymous
    • one year ago
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    Do you have a basic idea as to what to do?

  2. anonymous
    • one year ago
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    no

  3. anonymous
    • one year ago
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    Ok.. let's start off w/ the basics: You need to simplify this crazy expression by factoring out the GCF of this expression.

  4. anonymous
    • one year ago
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    Do you know what "GCF" stands for?

  5. anonymous
    • one year ago
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    greatest common factor

  6. anonymous
    • one year ago
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    Correct ! So, what do you think would be the GCF of this expression?

  7. anonymous
    • one year ago
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    2xy

  8. anonymous
    • one year ago
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    Correct.. wow you know how to do this!! Do you know how to factor "2xy" w/ this expression? Or is there where you get stumped?

  9. anonymous
    • one year ago
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    yeah i got lost right there

  10. anonymous
    • one year ago
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    |dw:1436457892829:dw| This is how you factor it out.. basically dividing polynomials.

  11. anonymous
    • one year ago
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    Is it clear?

  12. anonymous
    • one year ago
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    no not really

  13. anonymous
    • one year ago
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    From where? Ask me where you don't get it. :)

  14. anonymous
    • one year ago
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    We need to factor OUT the GCF from the expression. By dividing.

  15. anonymous
    • one year ago
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    I don't get why we are dividing. Like if it was x^2-x+25 Then it would be (x-5)(x+5)

  16. anonymous
    • one year ago
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    Like im not used to dividing when factoring expressions

  17. anonymous
    • one year ago
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    That is a trinomial... that's different :)

  18. anonymous
    • one year ago
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    oh ok

  19. anonymous
    • one year ago
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    Wait, no. After factoring out the GCF, it doesn't go away.. you'll see what I'll do... before putting it into that final parenthesis, you need to factor out any GCF's you see

  20. anonymous
    • one year ago
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    |dw:1436458437754:dw|

  21. anonymous
    • one year ago
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    Do you see what I did there?

  22. anonymous
    • one year ago
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    NOW I will be applying the factoring by trinomials method.

  23. anonymous
    • one year ago
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    The "2xy(" off to the side will remain there.

  24. anonymous
    • one year ago
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    so it would be 2xy(2x-3)(2x+5)

  25. anonymous
    • one year ago
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    Correct!

  26. anonymous
    • one year ago
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    Congrats :)

  27. anonymous
    • one year ago
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    Thank you soo much! :)

  28. anonymous
    • one year ago
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    Np! I love factoring haha

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