The average of non-zero number and its square is 5 times the number. The number is?  Pick one
A) 9	B) 37	C) 98	D) 8	E) 2
Let the number be x. Then,   (x + x2)/2 = 5x =&gt; x2 - 9x = 0   =&gt; x(x - 9) = 0   =&gt; x = 0 or x = 9   So, the number is 9.   9nswer:9
<result>A</result>
The average of non-zero number and its square is 5 times the number. The number is?