Thực hiện phép tính. c) 6 3 + 3 . 6 2 + 3 3 − 13
Giải thích
c) 63+3 . 62+33−13=(2 . 3)3+3 . (3 . 2)2+33−13
=23 . 33+3 . 32 . 22+33−13
=33(23+22+1)−13=13 . 33−13=−33=−27
c) 63+3 . 62+33−13=(2 . 3)3+3 . (3 . 2)2+33−13
=23 . 33+3 . 32 . 22+33−13
=33(23+22+1)−13=13 . 33−13=−33=−27