a) \(110 – 7^2 + 22:2\) = \(110 – 49 + 11 = 61 + 11 = 72\)

b) \(9.(8^2 – 15)= 9.(64 – 15 ) = 9.49 = 441\)

c) \(5.8 – (17 + 8):5 = 40 – 25:5 = 40 – 5 = 35\)

d) \( 75:3 + 6.9^2= 25 + 6.81 = 25 + 486 = 511\)

a: \(=\left(1.25\right)^{16}\cdot8^{16}\cdot8=8\cdot10^{16}\)

b: \(=\left(\dfrac{5}{2}\right)^{13}\cdot4^{13}\cdot4^2=10^{13}\cdot4^2\)

c: \(=\left(0.25\right)^4\cdot8^4\cdot8^2=2^4\cdot8^2=64\cdot16=1024\)

d: \(=\left(\dfrac{1}{2}\right)^{15}\cdot2^{18}=2^3=8\)

e: \(=\left(\dfrac{1}{3}\cdot6\right)^7\cdot\left(\dfrac{1}{2}\right)^7\cdot\dfrac{1}{2}=2^7\cdot\left(\dfrac{1}{2}\right)^7\cdot\dfrac{1}{2}=\dfrac{1}{2}\)

a)2/13 . 5 - 9/11 . 2/13 - 7/11 . 2/13

=2/13.(5-9/11-7/11)

=2/13.39/11

=6/11.

b)(-1/2)² + 4,25

=1/4+4,25

=1/4+17/4

=9/2.

c)(-2/3)² : ( --2 2/3) -- ( 5/8 -- 5/6 ) + 5.8--45/5.8

= -4/3 : -8/3 - -5/24 + 40 - 72

= -751/24.

=5,8(1+3+5+1)=58

=5.8 x (3+5)
=5.8 x 8
=29

5,8 + 5.8 x 3 + 5.8 x 5 + 5.8

= 5,8 + 5.8 x 3 + 5.8 x 5 + 5.8 x 1

= 5,8 x 1 + 5.8 x 3 + 5.8 x 5 + 5.8 x 1

= 5,8 x (1+3+5+1)

= 5.8 x 10

= 58

a) 5.8+7=47 ; 5.(8+7)=75

Nên 47 < 75.

b) 7.15-5=100 ; 7.(15-5)=70

Nên 100 > 70.

a, 5.7+7 và 5.(8+7)

=> 5.7+7 và 5.8+35

=> ...

b, 7.15-5 và 7.(15-5)

=> 7.15-5 và 7.15- 35

=> ...

5.8+7<5.8+7+4.7=5.8+5.7=5.(8+7)

7.15-5>7.15-5-6.5=7.15-7.5=7(15-5)

\(8^5.8^2+8^3=8^7+8^3\)