If a - b = 3 and a^2 + b^2 = 29, find the value of ab.
Select
A) 5
B) 10
C) 12
D) 14
E) 15
2ab = (a^2 + b^2) - (a - b)^2   = 29 - 9= 
<gadget id="calculator">29 - 9</gadget>
<output>20</output>
20   ab= 10.   10)
<result>B</result>
If a - b = 3 and a^2 + b^2 = 29, find the value of ab.