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Thread: Solve P(x)=0.....

  1. #1
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    Solve P(x)=0.....

    For the polynomial, solve P(x)=0

    $\displaystyle P(x)=(3x+2)(x-1)(4x+5)$

    how do i solve this question?

    Thanks in advance
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  2. #2
    Senior Member Peritus's Avatar
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    if

    $\displaystyle
    P(x)=(3x+2)(x-1)(4x+5) = 0
    $

    then either:

    1. $\displaystyle 3x+2 = 0$

    or

    2. $\displaystyle x-1 = 0$

    or

    3. $\displaystyle 4x+5 = 0$

    or every combination of the above thus the solution follows immediately:

    $\displaystyle
    x = - \frac{2}
    {3},1, - \frac{5}
    {4}

    $
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  3. #3
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    thanks for your help! it really helped me complete the other questions i had easily
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