[tex]15x^2-44x-36[/tex]
[tex]=(15x^2+10x)+(-54x-36)[/tex]
factor out 5x from [tex]15x^2+10x = 5x(3x+2)[/tex]
Factor out -18 from [tex]-54x-36 = -18(3x+2)[/tex]
[tex]=5x(3x+2)-18(3x+2)[/tex]
Factor out common term [tex](3x+2)[/tex]
[tex]= (3x+2)(5x-18)[/tex]
hope this helps!