MATEMATICAS/SECUNDARIA115
Profr. Gustavo Rodríguez
 
 

 

MATE-7



 


TRABAJO DE MATE GRUPO OCTAVO GRADO 




 


TRABAJOS DE MATE-NOVENO-2014-2015


1.- 2x(2x + 3) = 0                                                        2.- 5x(x + 2) = 0
       2x1 = 0           2x2 + 3 = 0                                         5x1=0              x2 + 2 =0
        X1 = 0/2        2x2 = -3                                                x1 = 0/5          x2 = -2
                             X2 =-3/2 
3.- x2 + 4x – 7x = 0                                                     4.- (x + 4) (x + 2) =0
      X2 – 3x = 0                                                                    x1 +4 = 0        x2 + 2 = 0
      X(x – 3) = 0                                                                   x1 = -4            x2 = -2
      X1 = 0           x2 – 3 = 0
                           X2 = 3
5.- (m + 7) (m + 3) = 0                                              6.- n2 - 6 + n = 0
       m1 + 7 = 0          m2 + 3 = 0                                     (n + 3) (n – 2) = 0
       m1 = -7               m2 = -3                                           n1 + 3 = 0            n2 – 2 = 0
                                                                                       n1 = -3                 n2 = 2
7.- (x -5) (x – 5) = 0                                                  8.- x2 + 6x + 9 = 0
       X1 – 5 = 0         x2 – 5 = 0                                           (x + 3) (x + 3) = 0
       X1 = 5              x2 = 5                                                   x1 + 3 = 0           x2 + 3 = 0
                                                                                           X1 = -3               x2 = -3
9.- (x – 3) (x – 2) = 0                                               10.- (x + 5) (x + 1) = 0
       X1 – 3 = 0         x2 – 2 = 0                                           x1 + 5 = 0         x2 + 1 = 0
       X1 = 3              x2 = 2                                                 x1 = -5              x2 = -1
 
11.- (x – 3) (x + 4) = 0                                             12.- (x – 4) (x + 3) = 0
         X1 – 3 = 0          x2 + 4 = 0                                        x1 - 4 = 0        x2 + 3 = 0
         X1 = 3               x2 = -4                                             x1 = 4             x2 = -3
 
13.- (x + 4) (x – 2) = 0                                             14.- (x + 6) (x + 5) = 0
         X1 + 4 = 0         x2 – 2 = 0                                         x1 + 6 = 0           x2 + 5 = 0
         X1 = -4              x2 = 2                                              x1 = -6                x2 = -5
 
15.- (x + 10) (x + 5) = 0                                             16.- (x + 6) (x + 1) = 0
         X1 + 10 = 0       x2 + 5 = 0                                           x1 + 6 = 0           x2 + 1 = 0
         X1 = - 10           x2 = - 5                                               x1 = - 6               x2 = - 1
 
17.- (x – 5) (x – 1) = 0                                               18.- (x – 3) (x – 1) = 0
          X1 – 5 = 0         x2 - 1 = 0                                           x1 - 3 = 0         x2 – 1 = 0
          X1 = 5              x2 = 1                                                 x1 = 3             x2 = 1
 

 

1.- X2 - 6x +9
 
2.- 4x2-16xy + 16y2
 
3.- 4b2 -4bc + c2
 
4.- 9x2y2 – 6x3y3 + x4y4
 
5.- -x2 + 16
 
6.- -25x4 + y2
 
7.- x2 – x – 20
 
8.- 9x4y2 – 1
 
9.- 6yz2 + 2xyz + 3xz + x2
 
10.- 25x2y4 – 9x6y2
 
© 2014 MATEMATICAS/SECUNDARIA115

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