IZRAZI
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1. IZPOSTAVLJANJE SKUPNEGA FAKTORJA Pravilo: a . c + b . c = (a + b) . c ali c . (a + b) b - a= - (a - b) 1. 2a2 + 6ab = 6. x2 - x3 + x4 = 2. 5n2 - 10n = 7. 6xy2 - 9xy - 3x = 3. 9x2 - 9x = 8. 4a4 - 8a3 + 12a2 = 4. 27b4 + 18b2 = 9. 33ab - 22a2b3 + 44a3b = 5. 8x3y - 12x2y = 10. 50x4y3 + 40x5y3 - 30x6y4 =
Izpostavi dvoθlenik: 1. a.( x 1 ) - b.( x 1 ) = 2. 2a.( 1 - 2x ) + ( 1 - 2x ) = 3. a.( x + y ) - ( x + y ) + c2.( x + y ) = 4. a 2 - n.( a 2 )2 = 5. 3x.( a b ) a b = 6. a( 1 x ) - 2b.( x - 1) =
2. KVADRAT DVOΘLENIKA Pravilo: (a + b)2 = a2 + 2ab + b2 (a - b)2 = a2 - 2ab + b2
1. ( x + 7 )2 = 9. ( x + 5 )2 = 2. ( x 5 )2 = 10. ( a 4 )2 = 3. ( a + 2b )2 = 11. ( 2x + y )2 = 4. ( 3a - 4v )2 = 12. ( 3a - 5b )2 = 5. ( 7x 1 )2 = 13. ( x2 - 2x )2 = 6. ( 3x - 2y )2 = 14. (- 2a b )2 = 7. (- 5x - 3y )2 = 15. (- 7 - v2 )2 = 8. (- 9 + 4v )2 = 16. ( xy2 - 8s2 )2 =
3. PRODUKT VSOTE IN RAZLIKE ISTIH DVEH ΘLENOV Pravilo: (a + b) . (a - b) = a2 - b2
1. ( x + 3 ) . ( x 3 ) = 11. ( 5x 1 ) . ( 5x + 1 ) = 2. ( 2a + b ) . ( 2a b ) = 12. ( 3a2 + 1 ) . ( 3a2 1 ) = 3. ( 5u + 6v ) . ( 5u - 6v ) = 13. ( a3 + 1 ) . ( a3 1 ) = 4. ( m2 n ) . ( m2 + n ) = 14. ( n5 + 1 ) . ( n5 1 ) = 5. r2 - t2 = 15. z2 4 = 6. x2 - a2 = 16. a2 9 = 7. 25 - x2 = 17. 4r2 25 = 8. 9 - 4a2 = 18. 16x2 81 = 9. 16b2 - 1= 19. u4 16 = 10. a4 - 1= 20. 81x4 16 =
4. RAZSTAVLJANJE NEKATERIH IZRAZOV Pravilo: (x + a) . (x + b) = x2 + (a + b) . x + ab
1. (a + 5) . (a + 3) = 9. a2 - 3a 10 = 17. z2 + 5z + 4 = 2. (a + 5) . (a - 3) = 10. x2 + 9x + 20 = 18. n2 + 3n 10 = 3. (a - 5) . (a + 3) = 11. z2 5z + 6 = 19. a2 - 4a 12 = 4. (a - 5) . (a - 3) = 12. u2 + 10u - 11= 20. u2 - 11u + 30 = 5. (x + 7) . (x + 3) = 13. r2 r 2 = 21. v2 + 10v + 25 = 6. (x - 7) . (x + 3) = 14. a2 - 8a + 12 = 7. (n + 6) . (n - 2) = 15. b2 - 3b 10 = 8. (n - 6) . (n - 2) = 16. x2 - 9x + 20 =
5. IZPOSTAVI IN RAZSTAVI Pravilo: vsa pravila
1. 2a3 - 18a = 8. 4z2 - 40z + 100 = 2. 3a4 - 108a2 = 9. x4 - 5x3 - 24x2 = 3. 4x5 - 100x3 = 10. 3n2 + 24n + 48 = 4. 6x4 - 150x2 = 11. 5b3 - 20b2 + 20b = 5. 15x3y2 - 60xy4 = 12. 2a4 - 12a3 + 18a2 = 6. 54a5b3 - 6a3b5 = 13. 7r4 + 14r3 + 7r2 = 7. 2a4 - 16a3 + 3a2 = 14. 100u2 - 144v2 =
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