what are all of the true polynomials?
5a^2b - 6ab^3c + 3a^5 is
5a^2b - 6ab^3c + 3a^5 has a leading term of 5.
5a^2 -b - 6ab^3c + 3a^5 contains three terms.
12x-10x5-7+3x* is equivalent to -10x^5 + 3x^4 + 12x-7.
12x - 10x^5 - 7 + 3x^4 has a leading term of -10x^5.
12x - 10x^5 - 7 + 3x^4 has a leading coefficient of 12.
Actually, the statement "what are all of the true polynomials?" is not clear. It seems like you are asking for the properties and characteristics of the given polynomials rather than a list of all possible true polynomials.
However, if you are looking for a list of all possible true polynomials, it is infinite, as there are an infinite number of possible polynomial functions with different degrees and coefficients.