(4h-2)(4h-1)(4h−2)(4h−1)
color(white)(aaaaaaaaaaaa)aaaaaaaaaaaa4h-24h−2
color(white)(aaaaaaaaaa)aaaaaaaaaa xx underline(4h-1)
color(white)(aaaaaaaaaaaaa)16h^2-8hcolor(white)(aaaaaaaaa)
color(white)(aaaaaaaaaaaaaaaaa)-4hcolor(white)(aaa)+2
color(white)(aaaaaaaaaaaaaa)color(blue)overline(16h^2-12h+2