What is the factor of 12xsquared -3?

The expression (12x^2 - 3) can be factored by taking out the greatest common factor, which is 3. This gives us (3(4x^2 - 1)). The expression (4x^2 - 1) can be further factored as a difference of squares: (3(2x - 1)(2x + 1)). Thus, the complete factorization is (3(2x - 1)(2x + 1)).