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I PRODUCTOS NOTABLES. (10 puntos)
Efectúa los siguientes productos por simple inspección.
( a + b )3 =
( d - 19 ) ( d - 5 ) =
( v - 23 )( v + 18 ) =
( x - 12 )( x - 11 ) =
( 7x3 + 5xy2 )3 =
( 5a + b )2 =
( x - 14 )( x + 3 ) =
( 2x + 7 )( 2x - 5 ) =
( 2x - 2 )3 =
II FACTORIZACIÓN . (10 puntos)
Factoriza las siguientes expresiones.
x2 + 3x - 4 =
36m2 - 81x4 =
9a 2b2 - 12a b3 + 4b4 =
8 - 12 x2 + 6x4 - x6 =
121x2 - 144y4 =
9x2y3 - 27x3y3 - 9x5y3 =
a3 - 64 =
n2 + n - 42 =
7a( x + y - 1 ) - 3b( x + y - 1 ) =
10) 2x2 + 5x - 3 =
III ECUACIONES DE 2° GRADO. . (10 puntos)
Resuelve las siguientes ecuaciones por fórmula general.
6x + x2 + 9 = 0
3x2 - 7x + 2 = 0
3x2 - 5x + 2 = 0
4x2 + 3x - 22 = 0
x2 + 11x = - 24
IV TRIGONOMETRÍA. (3 puntos)
1) ¿Qué significa la función sen ?
_________________________________________________________________________
2) ¿Qué significa la función cos ?
_________________________________________________________________________
3) ¿Qué significa la función tan ?
__________________________________________________________________________
V PROBLEMAS . ( 2 puntos por c/u)
Rompecabezas (Pentominós)
Coloca los 5 pentominós en el cuadro de la derecha.
El primer equipo en ganar 4 de 7 juegos posibles será el ganador en un torneo de baloncesto. ¿De cuántas maneras puede un equipo ganar 4 de los 7 juegos?
Un Rectángulo tiene un perímetro de 20 metros y una superficie de 24 metros cuadrados.
¿Cuáles son sus dimensiones?
24 m2
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Enviado por: El remitente no desea revelar su nombre Idioma: castellanoPaís: México