12 x 4 x (a x 1 - a : 1)
= 60 x ( a x 1 - a :1 )
= 60 x ( a - a )
= 60 x 0
= 0
nho k cho minh nhe
giá tri biểu thức 12 x 4 x {a x 1 - a : 1 } là :
12 x 4 x (a x 1 - a : 1)
= 60 x ( a x 1 - a :1 )
= 60 x ( a - a )
= 60 x 0
= 0
12 x 4 x {a x 1 - a : 1 }
=48 x 0
=0
to lam dung 100000000000000000000000000000000000000o 00000000000000000000000000000000000000000000000000%
vi to lam violypic lop 4 roi