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hrcheerlove Group Title

Multiply the polynomials: 1. (a + 3)(a - 2) 2. (x2 + 4)(x2 - 4) 3. (x2 + 3x + 1)(x2 + x + 2)

  • one year ago
  • one year ago

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  1. Outkast3r09 Group Title
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    use the distributive property \[a(b\pm c)=ab\pm ac\]

    • one year ago
  2. Outkast3r09 Group Title
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    using this you take the first variable of the first and multiply it by the second parenthesis and same with the second variable/constant of the first \[a(a-2)+3(a-2)\]

    • one year ago
  3. Outkast3r09 Group Title
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    what do you get when yo udo this?

    • one year ago
  4. hrcheerlove Group Title
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    So then i got: 2a-2a + 3a-6

    • one year ago
  5. hrcheerlove Group Title
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    But I dont think that is right lol

    • one year ago
  6. hrcheerlove Group Title
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    @Outkast3r09

    • one year ago
  7. Outkast3r09 Group Title
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    everything but your first multiplication is correct \[a(a)\neq 2a\]

    • one year ago
  8. Outkast3r09 Group Title
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    hint: when you have a number to a power you get this correct \[2^2=2*2\]

    • one year ago
  9. Outkast3r09 Group Title
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    so \[a*a=?\]

    • one year ago
  10. hrcheerlove Group Title
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    uhhh 2 squared ???

    • one year ago
  11. hrcheerlove Group Title
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    @Outkast3r09

    • one year ago
  12. Outkast3r09 Group Title
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    not quite so 2 is the base

    • one year ago
  13. Outkast3r09 Group Title
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    in \[2^2\]

    • one year ago
  14. Outkast3r09 Group Title
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    the power tells you how many times you multiply that base by itself

    • one year ago
  15. Outkast3r09 Group Title
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    so \[2^3=2*2*2\] \[2^5=2*2*2*2*2\]

    • one year ago
  16. Outkast3r09 Group Title
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    so in your case \[ a*a\] a is your base and the number of bases you multiply is your power

    • one year ago
  17. Outkast3r09 Group Title
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    so \[a*a=a^2\]

    • one year ago
  18. hrcheerlove Group Title
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    I know how to do powers lol. I just dont know what \[a \times a\] is

    • one year ago
  19. hrcheerlove Group Title
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    oh okay lol

    • one year ago
  20. some_someone Group Title
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    |dw:1359943457681:dw|

    • one year ago
  21. Outkast3r09 Group Title
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    I think it's just the variable thats giving you a tough time if it helps let a be whatever you want and then replace it back with a. For example i have \[a*a*a*a\] in your head think a=5 \[5*5*5*5=5^4\] replace 5 with a

    • one year ago
  22. some_someone Group Title
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    |dw:1359943594086:dw|

    • one year ago
  23. Outkast3r09 Group Title
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    some someone let her do the last one

    • one year ago
  24. hrcheerlove Group Title
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    so would it be \[a ^{2}-5a -6\] ?

    • one year ago
  25. Outkast3r09 Group Title
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    \[-2a+3a\] if you have 3 dollars and lost 2 dollars, how many do you have now =]

    • one year ago
  26. hrcheerlove Group Title
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    lol 1 dollar

    • one year ago
  27. some_someone Group Title
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    |dw:1359943710986:dw|

    • one year ago
  28. some_someone Group Title
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    |dw:1359943887804:dw|

    • one year ago
  29. hrcheerlove Group Title
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    Thank you thank you thank you @Outkast3r09 and @some_someone !!!!

    • one year ago
  30. some_someone Group Title
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    your welcome hope we could help you :)

    • one year ago
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