If a-b= 3 and a^2+b^2=29, find the value of ab	Pick one:
A) 10
B) 12
C) 15
D) 18
E) 19
2ab = (a^2 + b^2) - (a - b)^2   = 29 - 9= 
<gadget id="calculator">29 - 9</gadget>
<output>20</output>
20=&gt; ab = 10.   10NSWER:10
<result>A</result>
If a-b= 3 and a^2+b^2=29, find the value of ab