回答:
#( - 3x ^ 3-12x ^ 2-6x + 5)/(5x + 2)=#
#-3 / 5x ^ 2-54 / 25x-42/125 +(709/125)/(5x + 2)#
説明:
# "" "" "" "下線(-3 / 5x ^ 2-54 / 25x-42/125)#
#5倍+ 2 |〜 - 3倍^ 3 - 12倍^ 2 - 6倍+ 5#
# "" "" "" "下線(-3x ^ 3-6 / 5x ^ 2)#
# "" "" "" "" "" -54 / 5x ^ 2-6x + 5#
# "" "" "" "" ""下線(-54 / 5x ^ 2-108 / 25x)#
# "" "" "" "" "" "" "" "-42 / 25x + 5#
# "" "" "" "" "" "" "" "下線(-42 / 25x-84/125)#
#' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '709/125#
神のご加護がありますように。