a)  80 - (4.5² - 3.2³ )

= 80 - ( 4 . 25 - 3. 8 ) 

= 80 - ( 100 - 24 )

= 80 - 76 = 4 

b) 5⁶ : 5⁴ + 2³ . 2² - 1²⁰¹⁷ 

= 5² + 2⁵ - 1 

= 25 + 32 - 1 

= 57 -1 = 56 

a) 80 - (4.5² - 3.2³)

= 80 - (4.25 - 3.8)

= 80 - (100 - 24)

= 80 - 76

= 4

b) 5⁶ : 5⁴ + 2³ . 2² - 1²⁰¹⁷

= 5² + 2⁵ - 1

= 25 + 32 - 1

= 56

Chúc bạn học tốt!! ^^

a,  80 - 4 . 5 2 - 3 . 2 3

= 80 – (4.25 – 3.8)

= 80 – 76 = 4

b,  5 6 : 5 4 + 2 3 . 2 2 - 1 2018

=  5 2 + 2 5 - 1

= 25 + 32 – 1 = 56

c, [36.4 – 4. 82 - 7 . 11 2 ]:4 –  2019 0

= (144 – 4. 5 2 ):4 – 1

= (144 – 100):4 – 1

= 11 – 1 = 10

d, 303 – 3.{[655 – (18:2+1). 4 3 +5]}: 10 0

= 303 – 3.(655 – 10.64 + 5):1

= 303 – 10 = 293

a) 80-(4.5²-3.2³)=80-100+24=4

b)[36.4-4.(82-7.11)²]:4-2019⁰

={4.[36-(82-7.11)²]}:4-1

=[36-(82-7.11)²]-1

=11-1=10

c)5⁶:5⁴+2³.2²-1²⁰¹⁸

=5²+2⁵-1

=25+32-1=56

d)303-3.{[655-(18:2+1).4³+55]}:10⁰

=303-3.[(655-9-1).4³+55]:1

=303-3[655-640+5]

=303-3(20)

=303-60=243

a) $34-29+(-14)+129-(-114)$

$=34-29-14+129+114$

$=34+(129-29)+(114-14)$

$=34+100+100$

$=234$

b) $27\cdot(-35)+(-27)\cdot64-27$

$=(-27)\cdot35+(-27)\cdot64+(-27)\cdot1$

$=(-27)\cdot(35+64+1)$

$=(-27)\cdot(99+1)$

$=(-27)\cdot100$

$=-2700$

c) $160-(4\cdot5^2-3\cdot2^3)\cdot2-(-12)$

$=160-(4\cdot25-3\cdot8)\cdot2+12$

$=160-(100-24)\cdot2+12$

$=160-76\cdot2+12$

$=160-152+12$

$=160-(152-12)$

$=160-140$

$=20$

a, 34 - 29 + (-14) + 129 - (-114)

= 34 + (129 - 29) + (114  - 14)

= 34 + 100 + 100

= 234

b, 27.(-35) + (-27).64 - 27

= (-27).(35 + 64 + 1)

= - 27 . 100

= - 2700

c, 160 - (4.5² - 3.2³).2 - (-12)

= 160 - (4.25 - 3.8).2 + 12

=  160 - (100 - 24).2 + 12

=  160 - 76.2 + 12

= 160 - 152 + 12

= 8 + 12

= 20 

a, 34-29+(-14)+129-(-114)
= 34-29-14+129+114
= (34-14)+(-29+129)+114
= 20 + 100 + 114
= 234

a) 49 - 9 . [ 3⁴ : 3¹ - ( 12 - 4 ) : 2²  ]

= 49 - 9 . [ 3³ - 8 : 2² ]

=  49 - 9 . [ 3³ -2³ : 2² ]

=  49 - 9 . [ 3³ - 2 ]

= 49 - 9 . [ 27 - 2 ]

= 49 - 9 . 25

= 49 - 225 = -176

b) 4.5² + 16 : 2²

= 4. 25 + 2⁴ : 2²

= 100 + 2² = 100+ 4 =104

--tho--là tớ💋

c) 5³ : 5 - 2017⁰

= 5² - 1 = 25 - 1= 24 

d) 2² . 3 - ( 10⁰ + 8 ) : 3²

= 4. 3 - ( 1 + 8 ) : 3²

= 4. 3 - 9 : 3²

= 12 - 3² : 3²

= 12 - 1 = 11.

--tho--là tớ💋

a)160-(23.52-6.25)

160-(1196-150)

160-1046

-886

b)4.52-32:24

208-4/3

620/3

c)5871:(928-(247-82).5)

5871:(928-165.5)

5871:(928-825)

5871:103

57

A, 160-(2^3.5^2-6.25)

160-50

=110

=> 110= 2.5.7

B,4.5^2-32:2^4

=4.25-32:16

=100-2

=98

=>98=2.7^2

Cau c mk giong kq vs bn tren

a. 50-17+2-50+15

= (50-50)+(15+2-17)

= 0+0 = 0

b. 4.52+81:3²-(13-4)²

= 208+81:9-9²

= 208+9-81

= 136

c. 115-(-37)+2+(-49)+(-2)

= 115+37+2-49-2

= (115+37-49)+(2-2)

= 103+0 = 103

d. 815+[95+(-815)+(-45)]

= 815+95-815-45

= (815-815)+(95-45)

= 0+50

= 50

Haizzzxzzzzzcczz

câu C đề sai hay sao í

a)=(4.25).37

    =100.37

    =3700

b)=(132+868)+(763+237)+29

   =1000+1000+29

   =2029

c)=7²+[131-1.20]

  =49+[131-20]

  =49+111

  =160

a) 2012 - ( 304 + 2012 ) + ( 2013 + 304 )

= 2012 - 304 - 2012 + 2013 + 304 

= 2012 + ( - 304 ) + ( - 2012 ) + 2013 + 304

= [ 2012 + ( - 2012 ) ] + [ ( - 304 ) + 304 ] + 2013

= 0 + 0 + 2013

= 2013

b) \(\frac{9^{14}.25^5.8^7}{18^{12}.625^3.24^3}\)

\(=\frac{\left(3^2\right)^{14}.\left(5^2\right)^5.\left(2^3\right)^7}{\left(3^2.2\right)^{12}.\left(5^4\right)^3.\left(2^3.3\right)^3}\)

\(=\frac{3^{28}.5^{10}.2^{21}}{3^{24}.2^{12}.5^{12}.2^9.3^3}\)

\(=\frac{3^{28}.5^{10}.2^{21}}{3^{27}.5^{12}.2^{21}}\)

\(=\frac{3}{5^2}=\frac{3}{25}\)

a) 2012 - ( 304 + 2012 ) + (2013 + 304 )

= 2012 - 304 +2012 + 2013 + 304

= ( 2012 - 2012 ) + ( 304 + 304 ) + 2013

= 0 + 608 + 2013

= 2621

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