by using the quadratic equation.

Step-by-step explanation:

Here the coefficients of this quadratic equation are {7, -1, -3}.  Note that the given equation must be rewritten in standard form:  7x^2 - x - 3.

Then the discriminant, b^2 - 4ac, is (-1)^2 - 4(7)(-3), or 1 + 84, or 85.  Because this discriminant is positive, the given quadratic has two real, unequal roots.  These roots are:

      -(-1) ± √85

x =

             14

or:

        1 ± √85

x =

             14

chiken

step-by-step explanation: