If x^2 + 9/x^2 = 10, what is the value of x - 3/x Choose the correct option:
A) 36	B) 25	C) 2	D) 5	E) 3
To find : x-3/x. Let it be t.   =&gt; x-3/x = t   =&gt; (x^2 + 9/x^2) - 2*x*3/x = t^2 (Squaring both sides).   =&gt; (10) - 2*3= 
<gadget id="calculator">(10) - 2*3</gadget>
<output>4</output>
4=&gt; t^2 = 4. Thus t=2 or t=-2.   Answer 2
<result>C</result>
If x^2 + 9/x^2 = 10, what is the value of x - 3/x