Find the constant k so that : -x2 - (k + 7)x - 8 = -(x - 2)(x - 4) Select the correct option:  A) -11  B) -12  C) -13  D) -14  E) -15
-x2 - (k + 7)x - 8 = -(x - 2)(x - 4) : given   -x2 - (k + 7)x - 8 = -x2 + 6x - 8   -(k + 7) = 6 : two polynomials are equal if their corresponding coefficients are equal.   k = -13 : solve the above for k   correct answer -13
<result>C</result>
Find the constant k so that : -x2 - (k + 7)x - 8 = -(x - 2)(x - 4)