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Examenes De Matematicas 1ºBto  Ecuaciones
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Examenes De Matematicas 1ºBto Ecuaciones

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examen de Matematicas 1ºBto Ecuaciones

examen de Matematicas 1ºBto Ecuaciones

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  • 1. EXAMEN DE 1º DE BACHILLERATO: Matemáticas I Nombre: 19-11-2008 1.-(4,9 puntos) Resuelve las siguientes ecuaciones: a) ( x − 2) 2 = 3 e) 4 x = 3 ⋅ 2 x+1 − 8 2x + 5 x + 2 5 − = +x b) f) x = −2 + 16 + x 2 2 3 2 c) x 4 − 2 x 2 − 3 = 0 g) x 3 − 3x 2 = 6 x − 8 d) 3 log 2 x − 2 log x = log(4 x + 1) 27 + 50 − 8 + 108 − 288 + 125 2.-(1,2 puntos) a) Opera y simplifica: 7 b) Expresa mediante un solo radical: 3 7 3.- (1,2 puntos) Racionaliza y simplifica las siguientes fracciones : 3 2 1+ 7 4 a) b) c) 1− 7 83 2 2 ⎧ x − y = 10 ⎪ 4.-(0,9 puntos) Resuelve el siguiente sistemas de ecuaciones: ⎨ ⎪ y = x2 − 2 x − 8 ⎩ 5.-(1,8 puntos) Resuelve las siguientes inecuaciones: a) 1 − ( x − 2 )2 ≤ 0 b) x 2 + 10 x > −25 c) x 2 − 5 x + 7 ≤ 0

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