In the equation ax^2 + bx + c = 0 a, b, and c are constants, and abc # 0. If one root of the equation is -2, and b = 7a then which of the following is c equal to?
Choose the correct choice from the following choices
A) a/12	B) a/8	C) 6a	D) 10a	E) 12a
The sum of the roots is = -b/a = -7a/a = -7. Let the other root be x. Thus, x-2 = -7   x = -5. Again, the product of the roots is   -2*-5= 
<gadget id="calculator">  -2*-5</gadget>
<output>10</output>
10. Thus, c/a= 10. c = 10a.   10a.
<result>D</result>
In the equation ax^2 + bx + c = 0 a, b, and c are constants, and abc # 0. If one root of the equation is -2, and b = 7a then which of the following is c equal to?