The given expression is:
[tex](2x^2+4x-3)\text{ (5x - 6)}[/tex]The terms in the first bracket multiply each of the terms in the second bracket one after the other
[tex](2x^2)(5x)-(2x^2)(6)+(4x)(5x)-4x(6)-3(5x)-3(-6)[/tex]The expression then becomes:
[tex]10x^3-6x^2+20x^2-24x-15x+18[/tex]By combining like terms, the final expression then becomes:
[tex]10x^3+14x^2-39x+18[/tex]