One root of the quadratic equation x2 - 12x + a = 0, is thrice the other. Find the value of a? Choose the correct choice from the following answers
A) 29 B) -27 C) 28 D) 7 E) None of these
Let the roots of the quadratic equation be x and 3x.   Sum of roots = -(-12)= 
<gadget id="calculator">-(-12)</gadget>
<output>12</output>
12   a + 3a= 4a = 12 =&gt; a = 3   Product of the roots = 3a2 = 3(3)2 = 27.   ANSWNone of theseR:None of these
<result>E</result>
One root of the quadratic equation x2 - 12x + a = 0, is thrice the other. Find the value of a?