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a15scompos.pdf — Liceo Medi

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(1)CALCOLO LETTERALE. AUTOVALUTAZIONE 1. TEMPO CONSIGLIATO: 60 MINUTI. a. 3 e` una radice di x 2 þ 9. b. Il polinomio PðxÞ ¼ 4x þ 3 ha una radice uguale a  3 . 4. 3. SCOMPOSIZIONE IN FATTORI DI UN POLINOMIO. 4. 5. 2. c. Il polinomio x þ x  29x þ x  17 e` divisibile per ðx  19Þ. d. x 9 þ 1 e` irriducibile. Scomponi in fattori i seguenti polinomi. 2. x 2  x þ 2y  4y 2. 3. ðx  5Þ2  ð5x  3Þ2. 4. 4a 2 ðx  1Þ  12að1  xÞ þ 9x  9. 5. x 2  4y 2  9 þ 12y. 6. 2a 2 x 2  5a 2 x þ 2a 2  2x 2 þ 5x  2. 7. a 5nþ1 þ 4a nþ1 þ 4a 3nþ1. 8. x 3 þ 27y 3  x 2 þ 3xy  9y 2. 9. 3ax 4  51ax 2 þ 48a  bx 4 þ 17bx 2  16b. 10. ay  2by  a 2 þ 3ab  2b 2. 11. Determina il MCD e il mcm dei seguenti polinomi: 6x 3 þ x 2  10x þ 3. ESERCIZIO PUNTEGGIO. e. 1 þ 9x 2  6x. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. TOTALE. 0,25  4. 0,5. 0,5. 1. 1. 1. 1. 1. 1. 1. 1. 10. ESITO. & 2011 De Agostini Scuola S.p.A. – Novara. 1.

(2) CALCOLO LETTERALE AUTOVALUTAZIONE – SOLUZIONI. Scomposizione in fattori di un polinomio a.. b.. c.. d.. 2. ðx  2yÞðx þ 2y  1Þ. 3. 4ð2x þ 1Þð3x  4Þ. 4. ðx  1Þð2a þ 3Þ2. 5. ðx  2y þ 3Þðx þ 2y  3Þ. 6. ð2x  1Þðx  2Þða þ 1Þða  1Þ. 7. a nþ1 ða 2n þ 2Þ2. 8. ðx 2  3xy þ 9y 2 Þðx þ 3y  1Þ. 9. ðx þ 1Þðx  1Þðx þ 4Þðx  4Þð3a  bÞ. 10. ða  2bÞðy  a þ bÞ. 11. MCD ¼ 3x  1; mcm ¼ ð3x  1Þ2 ð2x þ 3Þðx  1Þ. & 2011 De Agostini Scuola S.p.A. – Novara. SCOMPOSIZIONE IN FATTORI DI UN POLINOMIO. 1. 2.

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