a) {[(16+4):4] - 2} b)60 : {[(12 - 3). 2] + 2}

2 câu trả lời

a)

{[(16+4):4]2}

=(20:4)2

=52

=3

b)

60:{[(123).2]+2}

=60[(9.2)+2]

=60(18+2)

=60.20

=1200

 

a)

{[(16+4):4]-2}

=(20:4)-2

=5-2

=3

b)

60:{[(12-3).2]+2}

=60[(9.2)+2]

=60(18+2)

=60.20

=1200