The Product of two number is 20. The sum of square of the two number is 81. Find the sum of the numbers Choose the correct choice from the following options.
A) 21	B) 19	C) 9	D) 11.	E) 8
Solution   Let the numbers be x, y   = x2+y2= 81   =2(x+y)=40   =&gt; (x+y)2=81+40= 
<gadget id="calculator">81+40</gadget>
<output>121</output>
121,=&gt; x+y=sqrt(121)=11.   Answer 11.
<result>D</result>
The Product of two number is 20. The sum of square of the two number is 81. Find the sum of the numbers