The simplified expression by rationalizing the denominator is (C)
.First we must simplify the expression:

Then we factor the rational parts and cancel it out:

Then we rationalize the expression:

<span>Finally, the simplified expression by rationalizing the denominator is (C)

.</span>
Answer:
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First you had subtract by ten from both sides of equation form.

Then simplify by equation.

Final answer: 
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-Charlie