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 = 4a then which of the following is c equal to?
Choose the correct choice from the following answers:
A) a/12
B) a/8
C) 4a
D) 8a
E) 12a
The sum of the roots is = -b/a = -4a/a = -4. Let the other root be x. Thus, x-2 = -4   x = -2. Again, the product of the roots is   -2*-2= 
<gadget id="calculator">  -2*-2</gadget>
<output>4</output>
4. Thus, c/a=4. c = 4a.   4a.
<result>C</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 = 4a then which of the following is c equal to?