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    A) If you have
    5x^5 + 7x - 2 (MINUS (-) THE FOLLOWING)
    4x^5 - 2x^3 + 7

    Would you get
    x^5 - 2x^3 + 7x - 9 OR
    x^5 + 2x^3 + 7x - 9

    B) If I have
    (3x^2 + 2x + 4)(4x^3 + 7x + 6)
    Do you get:
    12x^5 + 8x^4 + 37x^3 + 32x^2 + 40x + 24

    ????
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    (Original post by virtuality)
    A) If you have
    5x^5 + 7x - 2 (MINUS (-) THE FOLLOWING)
    4x^5 - 2x^3 + 7

    Would you get
    x^5 - 2x^3 + 7x - 9 OR
    x^5 + 2x^3 + 7x - 9

    B) If I have
    (3x^2 + 2x + 4)(4x^3 + 7x + 6)
    Do you get:
    12x^5 + 8x^4 + 37x^3 + 32x^2 + 40x + 24

    ????
    A.) (5X^5 + 7x - 2) - (4x^5 - 2x^3 + 7)

    ---> x^5 + 2x^3 + 7x -9

    B.) (3x^2 + 2x + 4)(4x^3 + 7x + 6)

    ---> 12X^5 + 21X^3 + 18X^2 + 8X^4 + 14X^2 + 12X + 16X^3 + 28X + 24

    ----> 12X^5 + 8X^4 + 37X^3 + 32X^2 + 40X + 24
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    a) x^5 + 2x^3 + 7x - 9
    b) yes, correct
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    (Original post by JamesF)
    a) x^5 + 2x^3 + 7x - 9
    b) yes, correct
    Beat you to it!
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    Thanks! I always think I'm wrong.
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    (Original post by virtuality)
    Thanks! I always think I'm wrong.
    The back of the textbook is always wrong!
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    (Original post by bono)
    Beat you to it!
    Ah yes, but 7x + 2x^3 doesnt equal 9x^3
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    (Original post by JamesF)
    Ah yes, but 7x + 2x^3 doesnt equal 9x^3
    Now, talking about bad mistakes, that is one.
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    (Original post by JamesF)
    Ah yes, but 7x + 2x^3 doesnt equal 9x^3
    I knew going to bed at 4am wasn't a good idea!
 
 
 
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