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madisonmaruhnich94

combine like terms. (-3y^2 - 7y - 9) - (4y^2 + 6y + 9)

  • one year ago
  • one year ago

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  1. dhatraditya
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    again. say y^2 is apples and y are oranges.

    • one year ago
  2. mitchelsewbaran
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    -7y^2-y+0 or -7y^2-y

    • one year ago
  3. madisonmaruhnich94
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    thank you both:)

    • one year ago
  4. kmalone99
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    do you get how mitch got his answer?

    • one year ago
  5. dhatraditya
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    -9-9 = -18 not 0

    • one year ago
  6. mitchelsewbaran
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    my bad

    • one year ago
  7. madisonmaruhnich94
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    could it be -7y^2 + 13y + 18?

    • one year ago
  8. mitchelsewbaran
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    -7y^2-13y-18

    • one year ago
  9. mitchelsewbaran
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    watch ur signs :)

    • one year ago
  10. kmalone99
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    |dw:1347826413332:dw| now add like terms

    • one year ago
  11. madisonmaruhnich94
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    7y^2 + 13y + 18?

    • one year ago
  12. mitchelsewbaran
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    -7y^2-13y-18

    • one year ago
  13. madisonmaruhnich94
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    ohhhh thank you:)

    • one year ago
  14. mitchelsewbaran
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    yeah, watch ur signs carefully next time ok? :)

    • one year ago
  15. dhatraditya
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    Okay. Let me go through this one more time. Like terms means exactly what they sound like. suppose you had 5 apples and 4 oranges,. Could you add 5 apples to 4 oranges and say you have 9 apples? No, because apples are not oranges., so when you have something like (-3y^2 - 7y - 9) - (4y^2 + 6y + 9) , this means that you can add the y^2 terms together because they are like terms. Anyway, getting back to the problem. Suppose y^2 is apples. and y is oranges. (-3y^2 - 7y - 9) - (4y^2 + 6y + 9) means that you are subtracting 4 apples and 6 oranges and the number 9 from -3 apples and -7 oranges and the number -9. When you subtract 4 apples from -3 apples, you end up with -7 apples. when you subtract 6 oranges from -7 oranges, you end up with -13 oranges., subtracting 9 from -9 gives you -18. This means that you have -7 apples and -13 oranges and the number -18. In mathematical terms, this is -7y^2 -13y -18

    • one year ago
  16. madisonmaruhnich94
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    okay sounds good! :)

    • one year ago
  17. kmalone99
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    |dw:1347826655400:dw| no your not multipling you adding or subtracting exapmple so if I was at negative 9 or minus 9 then took -9 more then I'd be at -18 hence why we get -7y^2-13y-18

    • one year ago
  18. madisonmaruhnich94
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    thank you @dhatraditya that helped :)

    • one year ago
  19. madisonmaruhnich94
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    and same to you @kmalone99

    • one year ago
  20. dhatraditya
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    @madisonmaruhnich94 : that's great. Always try to make those fancy x's and y's mean something that you can relate to.

    • one year ago
  21. kmalone99
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    remember like dhatradutya must be like terms, exactly alike and your welcome your sme age as one of my daughters.

    • one year ago
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