Let's perform the synthetic division
color(white)(aaaa)2color(white)(aaaaa)|color(white)(aaaa)2color(white)(aaaaaa)3color(white)(aaaaaa)-9color(white)(aaaa)-10
color(white)(aaaaaaaaaaaa)_________
color(white)(aaaa)color(white)(aaaaaaa)|color(white)(aaaa)color(white)(aaaaaa)4color(white)(aaaaaaa)14color(white)(aaaaa)10
color(white)(aaaaaaaaaaaa)________
color(white)(aaaa)color(white)(aaaaaaa)|color(white)(aaaa)2color(white)(aaaaa)7color(white)(aaaaaaaa)5color(white)(aaaaaa)color(red)(0)
(2s^3+3s^2-9s-10)/(s-2)=(2s^2+7s+5)
The remainder is =0 and the quotient is =2s^2+7s+5