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21 June, 09:58

Six times the square of a number x plus 11 times the number equals 2. What are possible values of x?

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  1. 21 June, 10:15
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    -2, 1/6

    Step-by-step explanation:

    6x²+11x=2

    6x²+11x-2=0

    Delta=11²-4*6 * (-2) = 121+48=169

    x1,2 = (-11 + - sqrt (169)) / (2*6) =

    (-11 + - 13) / 12

    x1 = (-11+13) / 12=2/12=1/6

    x2 = (-11-13) / 12=-24/12=-2
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