The expression\[\frac{1}{\sqrt{3x+1}}\left[ {{\left( \frac{1+\sqrt{3x+1}}{2} \right)}^{7}}-{{\left( \frac{1-\sqrt{3x+1}}{2} \right)}^{7}} \right]\]is a polynomial in x of degree equal to

The expression\[\frac{1}{\sqrt{3x+1}}\left[ {{\left( \frac{1+\sqrt{3x+

1.	The expression\[\frac{1}{\sqrt{3x+1}}\left[ {{\left( \frac{1+\sqrt{3x+1}}{2} \right)}^{7}}-{{\left( \frac{1-\sqrt{3x+1}}{2} \right)}^{7}} \right]\]is a polynomial in x of degree equal to
A.	3
B.	4
C.	2
D.	5
Answer» B. 4

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The expression\[\frac{1}{\sqrt{3x+1}}\left[ {{\left( \frac{1+\sqrt{3x+1}}{2} \right)}^{7}}-{{\left( \frac{1-\sqrt{3x+1}}{2} \right)}^{7}} \right]\]is a polynomial in x of degree equal to

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