Question

Câu 1 Thực hiện phép tính

a) 3^3 +3^2 - (2^7 : 2^5 + 7^8 : 7^7)

b) 27.77 + 27.27 - 27

c) 52 : (43-30) + 144 - 16

d) 174 : {2[36 + (4^2 - 23)]}

e) 180 : {300 : [450 - (4.5^3 - 2^2.25)]}

f) 3^2.101 - 3^2.101^0

   ( Dấu "^" là dấu mũ nha )

Answer 1

\(a,3^3+3^2-\left(2^7:2^5+7^8:7^7\right)=27+9-\left(2^2+7\right)=36-11=25\)

\(b,27.77+27.27-27=27\left(77+27-1\right)=27.103=2781\)

\(c,52:\left(43-30\right)+144-16=52:13+128=4+128=132\)

\(f,3^2.101-3^2.101^0=3^2\left(101-101^0\right)=9\left(101-1\right)=9.100=900\)

Answer 2

a.=27+9-(2^2+7^1)                                                 =36-(4+7)                                                               =36-11                                                                   =25

Answer 3

3³+3²-(2⁷:2⁵+7⁸:7⁷)

=27+9-(2²+7)

=36-(4+7)

=36-11

=25

b.bạn tự lm nha

c.52:(43-30)+144-16

=52:13+144-16

=4+144-16

=148-16

=132

d.174:{2[36+(4²-23)]}

=174:{2[36+(16-23)]}

=174:{2[36+-7]}

=174:{2.29}

=174:58

=3