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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 4/5

If one root of x2+bx+12=0x^2 + bx + 12 = 0 is 4, what is the other root?

  • A

    −3-3

  • B

    88

  • C

    −8-8

  • D

    33

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Explanation

Product of roots =12= 12, so other root =12/4=3= 12/4 = 3.

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