A )√25 + ³√27 =
b )³√8 - √16 levado 4 =
c) - 3 √9 + 2 √144 =
d ) √64 + √144 + √121 =
e ) √25 + 2√9 - ³√64 =
f ) ³√8 + 2 . √121 =
g ) (-2)³ + 9-12) : (-4) + (-3)² =
h ) 3 √9 + 2 √144 =
i ) √196 + 3 √81 =
j) √100 - 3 √100
k) 3² . 5² =
l) 4² + 3² - 2² =
m) ( - 7 ) + 7² - 3³ =

2

Respostas

2014-04-17T23:47:50-03:00

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a )√25 + ³√27
5 + 3
   8


b )³√8 - √16
  2 - 16
⁴/²
2 - 16²
2 - 256
- 254

c) - 3 √9 + 2 √144 =
 - 3.3 + 2.12
- 9 + 24
 + 15


d ) √64 + √144 + √121
8 + 12 + 11
     31


e ) √25 + 2√9 - ³√64 =
5 + 2 .3 - 4
5 + 6 - 4
 11 - 4
   7


f ) ³√8 + 2 . √121 = 
   2 + 2.11
  2 + 22
    24


g ) (-2)³ + 9-12 : (-4) + (-3)² =
    - 8 + 9 + 3 + (+9)
- 8 + 12 + 9
  -8 + 21
    +13

    

h ) 3 √9 + 2 √144 = 
3.3 + 2.12
9 + 24
 33


i ) √196 + 3 √81
    14 + 3.9
    14 + 27
        41


j) √100 - 3 √100
     10 - 3.10
     10 - 30
       - 20



k) 3² . 5² =
   9 . 25
    225


l) 4² + 3² - 2² = 
16 + 9 - 4
   25 - 4
   21



m) ( - 7 ) + 7² - 3³ =
     - 7 + 49 - 27
      - 7 - 27 + 49
       - 34 + 49
             15

2014-04-18T01:08:34-03:00
     VOU FATORAR TODOS   PARA MELHOR VISÃO

a )√25 + ³√27 =                 25 | 5             27 | 3
                                           5 | 5               9 | 3
                                              1                 3 | 3
                                                                    1
√25 = √5² = 5
∛27 = ∛3³ = 3  ---------------     √25 + ³√27 = 5 + 3 = 8

b )³√8 - √16 levado 4 =

³√8         8 | 2                  √16 levado 4                   16 | 2
              4 | 2                                                            8 | 2
              2 | 2                                                            4 | 2
                1                                                               2 | 2
                                                                                    1
8 = 2.2.2. = 2³                                                                16= 2.2.2.2.= 2 elevado 4

³√8 - √16 levado 4 = ∛2³ - Raiz 2 elevado 4  =  2 - 2 = 0


c) - 3 √9 + 2 √144 =
 
 - 3 √9        9 | 3                                                     2 √144           144| 2
                  3 | 3                                                                             72| 2
                     1                                                                               36| 2
                                                                                                      18| 2
                                                                                                        9| 3
                                                                                                        3| 3
                                                                                                          1
- 3 ( √9 = 3.3 = 3²=√3² = 3)  +       2(√144 = 2.2.2.2.3.3= 2².2².3²=√2².2²3²= 2.2.3= 12) 
- 3(3)                                    +       2(12)

-9 + 24 = 15
 
- 3 √9 + 2 √144  = 15


d ) √64 + √144 + √121 =
√64                                √144                                                      √121 
64| 2                                 144|2                                                    121 |  11
32| 2                                   72|2                                                      11 |  11
16| 2                                   36|2                                                           1
  8| 2                                   18|2
  4| 2                                     9|3                                    
  2| 2                                     3|3
    1                                         1
√64=2².2².2²                 √144 = 2².2²3²                                       √121 = 11²
√64 =√2²2²2²                √144 = √2²2²3²                                       √121 =√11²
√64 =2.2.2=8                √144=2.2.3=12                                      √121 = 11
então;

 √64 + √144 + √121  =  8 + 12 + 11 =31

OBSERVAÇÃO
essa raizes JÁ FOI FEITO como exemplo ACIMA     (okkkkkkkkkkkkk)
e ) √25 + 2√9 - ³√64 =
√25 = 5
 2√9 = 2 (√9=3)  =2(3) =3 

  ³√64 = ∛2³ = 2  

  √25 + 2√9 - ³√64 =   5 + 3  - 2 =  6


f ) ³√8 + 2 . √121 = 

³√8  = ∛ 2³    = 2
2 . √121  = 2.( √121 =√11² =11) = 2(11) = 22

  ³√8 + 2 . √121 =   2 + 11  =  13


g ) (-2)³ + 9-12) : (-4) + (-3)² =

     (-8    +9 -12) : -4 + 9 =
            -20   + 9 :  5 =
                   -11  : 5  =  - 2,2 


 h ) 3 √9 + 2 √144 =

  3 √9 =  3 (√9 = √3² =3) = 3(3) = 9

  2 √144 =  2 (√144 = √2².2².3² =2.2.3 =12)= 2(12) = 24

3 √9 + 2 √144 =  9 + 24 = 33 


i ) √196 + 3 √81 =

 √196                                                     3 √81
196| 2                                                         81| 3
 98| 2                                                          27| 3
 49| 7                                                            9| 3
   7| 7                                                            3| 3
     1                                                                1 
√196 = 2.2.7.7=√2².7²= 2.7=14 
                                                      3 √81 = 3( √81= √ 3².3² = 3.3= 9) =3(9)=27

√196 + 3 √81 =  14 + 27 =   41


j) √100 - 3 √100

 √100
100| 2
  50| 2
  25| 5
    5| 5
     1
√100 = √2².5² = 2.5.= 10

√100 - 3 √100 =  
  10   - 3( 10) =   10 - 30   =  - 20


k) 3² . 5² = 
    3.3.5.5.=
      9 x 25 = 225


l) 4² + 3² - 2² =
4.4. + 3.3 - 2.2.=
16   + 9    - 4   =     25 - 4 =   21


m) ( - 7 ) + 7² - 3³ =
      - 7     + (7.7) - ( 3.3.3) =
     - 7      + 49 - ( 27) =    - 7 + 49 - 27 =    49 - 34  =   15




espero ter ajudado!!!!!!!!!