If a and b are the roots of the equation x2 - 6x + 6 = 0, then the value of a2 + b2 is:	Choose the most appropriate option:	A) 36	B) 24	C) 17	D) 6	E) 5
Sol.(b) The sum of roots = a+ b = 6   Product of roots = ab = 6   Now, a2 + b2 = (a + b)2 - 2ab = 36 - 12= 
<gadget id="calculator">36 - 12</gadget>
<output>24</output>
24   Answer 24
<result>B</result>
If a and b are the roots of the equation x2 - 6x + 6 = 0, then the value of a2 + b2 is: