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2 August, 08:18

What is the value of k if 2x3 - 3x2 kx - 4 is divided by x - 3 and gives a remainder of - 7? - 10 - 26 10 26

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  1. 2 August, 08:50
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    Hello,

    ... |x^3 ... |x^2 ... |x^1 ... |x^0 ...

    ... |2 ... |-3 ... |k ... |-4 ...

    x=3 ... | ... |6 ... |9 ... |3k+27.

    ... |2 ... |3 ... |k+9 ... |3k+23.

    If remainder=-7 then - 7=3k+23==>3k=-7-23==>3k=-30==>k=-10

    Answer A
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