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anonymous

  • one year ago

A billboard has an area of z2 – 3z – 18 and your company would like to use this for advertising. Marketing needs the measurements of the base and height in order to craft their image. Find the dimensions by factoring the polynomial

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  1. zpupster
    • one year ago
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    go ahead and factor z2 – 3z – 18 (z )(z )

  2. anonymous
    • one year ago
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    (z+6)(z-3)

  3. anonymous
    • one year ago
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    is that the answer?

  4. anonymous
    • one year ago
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    \[z^2-6z+3z-18=0\] ?

  5. anonymous
    • one year ago
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    thats the answer?

  6. anonymous
    • one year ago
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    You need to factorize the polynomial. Your answer of (z+6)(z-3) was almost right but your positives and negatives are wrong. If you expand it you get z^2 + 3z - 18 but its z^2 - 3z - 18 in the question. When you factorize its the numbers which multiply to the last number and add to the coefficient of the middle term (with z). Therefore the answer is (z-6)(z+3) this is because -6+3 = -3 -6*3=-18

  7. anonymous
    • one year ago
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    I'll give you another question to try

  8. anonymous
    • one year ago
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    Try factorize z^2 - 6z -16

  9. anonymous
    • one year ago
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    (z+2)(z−8)

  10. anonymous
    • one year ago
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    Yep that's right, good job ;)

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