Answer: 75x^2-3 can be factored as (25x)^2 - 3 . The expression can be factored by taking the square root of the constant term and then using difference of squares.
In this case, the square root of -3 is not a real number, so it's not possible to factor it further.
So the final factored form of 75x^2-3 is (25x)^2 - 3.