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Math Help - Help with review

  1. #1
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    Help with review

    ok so im doing my review for the exam coming up and i stumbled on this question that i never did figure our, can anyone help me with it?

    Question:
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  2. #2
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    sub in x=2 and solve to find k

    Once you've got k factorise the cubic to get (x-2)(some quadratic)=0 and then solve the quadratic.
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  3. #3
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    k

    well how do u factor the cubic function, do u use quadratic formula? Sry i just completely forget.
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  4. #4
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    You could divide the cubic by x-2.
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  5. #5
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    alright

    nvm i figured it out, thanks for the help
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