√ ( 21 ) ^ 2	Choices:  A) 7  B) 14  C) 49  D) 21  E) none of these
<gadget id="calculator">21 ** 2</gadget>
<output>441</output>

<gadget id="calculator">441 ** (1/2)</gadget>
<output>21</output>

<result>D</result>
√ ( 21 ) ^ 2
sqrt(power(21, 2))
"explanation √ ( 21 ) ^ 2 = ? or , ? = 21 answer d"