Answer :
The leading coefficient of the polynomial 2x7+19x3-8x+25 is 2, which is the coefficient of the term with the highest degree, 2x7.
The leading coefficient of a polynomial is the coefficient of the term with the highest degree. In the polynomial 2x7+19x3-8x+25, the term with the highest degree is 2x7. Therefore, the leading coefficient is 2.