Ejercicios de matemáticas.

  Ejercicios de matemáticas.



1.- (4a2 - 7ab) (2a 3b) = 8a 5b – a 4a 4b 2


2.- 2a – (-x+ a–a) – (a+x-3) = 2a +x +a +1 -a -x +3 = 4


3.- 8x 2y – 20x 3 =    2y -5

         4x 2

4.- 8x 6 – 10x 4 – 12x 3 = -2x 4 + 5/2x 2 +3x

            -4x 2

5.- 27m 4n 6 – 15m 3 n6 + 3mn 2 = 9m 3n 5 – 5m 2n 4 +n

                       3mn2





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Hi ! My name is Marcia Coronado. I have 15 years old.  Andador Lázaro Cardenas #1 , Chiconcuac . Tel: 55 17 45 63 89 I  like sing all the time in my house. I play with my nephews in the afternoon. I watch TV with my mom at the night. I help my dad with his work every time he needs it. I always dance my favorite songs.  My dad is Porfirio Coronado , he has 50 years old and his ocupation is a merchant. My mom is Fatima Pérez , she has  49 years old and her ocupation is a merchant. My brother is Alejandro Coronado , he has 30 years old and his ocupation is a merchant. My sister is Paola Coronado , she has 29 years old and her ocupation is to be a teacher. My sister is Blanca Coronado , she has a 21 years old and her ocupation is a student.
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The routine that I described above is the one that I usually carry out in my daily life , since I always need an adequate organization of my times to be able to perform all the activities corresponding to my life.So that is the routine that I usually carry out. Maria  always  dances her favorite songs at the night. Pedro  often runs in the park in the morning. Paola sometimes sing while bathing at the night. Camila often drives bad in his new car.  Porfirio always works much in his home everyday. Fatima often cooks safely food for your family in the afternoons. Isabel  rarely renew your closset commonly . Alejandro always plays the gutar in his room every weekend.
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