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reedplymel

  • one year ago

Find the difference: (6y3 + 17y − 3) − (4y3 − 11y + 9) 2y3 + 28y + 12 2y3 + 6y − 12 2y3 + 28y − 6 2y3 + 28y − 12

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  1. welshfella
    • one year ago
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    first distribute the negative over the second parentheses

  2. anonymous
    • one year ago
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    D

  3. reedplymel
    • one year ago
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    the last one??

  4. anonymous
    • one year ago
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    Yes its the last one

  5. reedplymel
    • one year ago
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    ok medal goes to u thx

  6. anonymous
    • one year ago
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    yay thank you

  7. reedplymel
    • one year ago
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    Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5) 8x2 + 8x − 13 8x2 − 8x + 13 8x2 − 8x − 13 8x2 − x − 13

  8. reedplymel
    • one year ago
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    this one

  9. anonymous
    • one year ago
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    c

  10. reedplymel
    • one year ago
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    ok can u work with me on the rest so i can know tjis stuff instead of u giving it to mee Simplify the expression (2x − 9)(x + 6). 2x2 − 54 2x2 − 3x − 54 2x2 + 3x − 54 2x2 + 21x − 54

  11. welshfella
    • one year ago
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    @beckyg111 Please dont just give the answer - guide the questioner through the problem

  12. reedplymel
    • one year ago
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    ya im tryin to learn can u help me

  13. anonymous
    • one year ago
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    Ok sorry @welshfella can u help him i need to take a test

  14. welshfella
    • one year ago
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    (2x − 9)(x + 6) first you multiply the second part by 2x then multiply it by -9 = 2x(x + 6) - 9(x + 6) ok so far?

  15. reedplymel
    • one year ago
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    yeah

  16. welshfella
    • one year ago
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    right- now you distribute the 2x and the -9 over the 2 parentheses = 2x*x + 2x*6 - 9*x -9*6 = 2x^2 + 12x - 9x - 54 notice the last term is negative 54 because you multiply negative times positive

  17. reedplymel
    • one year ago
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    so A is out?

  18. welshfella
    • one year ago
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    now the 2 middle terms are alike so it simplifies to 2x^2 + 3x - 54

  19. welshfella
    • one year ago
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    yes its not A

  20. reedplymel
    • one year ago
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    ok were did u get the 3x

  21. welshfella
    • one year ago
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    12x - 9x = 3x

  22. welshfella
    • one year ago
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    - combining like terms

  23. reedplymel
    • one year ago
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    theres only one x plus the 2x aint no 12

  24. welshfella
    • one year ago
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    2x^2 + 12x - 9x - 54 = 2x^2 + 3x - 54 the 2 middle terms are 12x and - 9x - they are like termsa so you can simplify them

  25. reedplymel
    • one year ago
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    ohh so its C?

  26. welshfella
    • one year ago
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    yes

  27. reedplymel
    • one year ago
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    mb computer messin up

  28. reedplymel
    • one year ago
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    thx

  29. welshfella
    • one year ago
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    yw

  30. reedplymel
    • one year ago
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    do u think u can do some more wit me

  31. welshfella
    • one year ago
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    i can probably do one more I have to go soon.

  32. reedplymel
    • one year ago
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    ya me too Simplify the expression -2x2(4x − 3).

  33. reedplymel
    • one year ago
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    8x3 − 6x2 -8x3 + 6x2 8x3 − 6x2 8x3 + 6x2

  34. welshfella
    • one year ago
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    = -2x^2 * 4x - 2x^2 * -3

  35. welshfella
    • one year ago
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    -2 * 4 = ?

  36. welshfella
    • one year ago
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    remember negative * positive = negative

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