数学公式RAP
a one HANG EN a plus n minus one and d.
ZUNG ZEM x NEN YI BUN EI a plus b yeah.
s n HANG EN YI BUN EI n and two a plus n minus one and d.
a one HANG EN s one HANG GUA GA TA, a n HANG EN s n HANG minus s minus one HANG GUA GA TA,DA MAN n YI YI BO DA KU GE NA GA TER DAE.
the last formula a n HANG EN a r n minus one square
韩剧Monstar第七集数学差公式Rap