#### Sample Question

Factor completely:

[%\frac{1}{4}a^2b^2-1%]

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Factor completely:

[%\frac{1}{4}a^2b^2-1%]

- [% \left(\frac{1}{4}ab+1\right)\left(\frac{1}{4}ab-1\right) %]
- [% \left(\frac{1}{2}ab-1\right)^2 %]
- [% \left(\frac{1}{2}ab+1\right)^2 %]
- [% \left(\frac{1}{2}ab+1\right)\left(\frac{1}{2}ab-1\right) %]

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