Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 3/5

What is the sum of the roots of x27x+12=0x^2 - 7x + 12 = 0?

  • A

    1212

  • B

    12-12

  • C

    7-7

  • D

    77

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Explanation

Sum of roots =b/a=7= -b/a = 7. (Roots are 3 and 4.)

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