CALCUL ALGEBRIC TESTE NR. 1 Calculați 1) 7x2 – 2x – 5 – 3x2 + 6x + 8 = 2) 3∙(4x – 6) – 4x∙(x + 3) = 2 2 3) (2x – 3x – 1)∙(x – 2) = 4) (2x – 3) = 5) (4x – 3)∙(4x + 3) = 2 2 6) 5 x 3 2 5 x 3 2 5 x 3 3 5 x 1 7) 5x 5 x 2 3x 3 2 x 2 2 8) (x – 2) – (2x + 1) – (3x + 1)∙(3x – 1) = NR. 2 Calculați 1) 3x – 5x + 1 – 2x – 3x – 6 = 2) 5∙(4x – 1) – 2x∙(3x + 10) = 2 2 3) (x – 4x + 3)∙(3x – 1) = 4) (5 – 2x) = 5) (2x – 5)∙(3x + 5) = 2 2 6) 2 3 2 3 7 4 3 7 4 6 2 7) 6x 2 3x 4 2x 2 x 3 8) (3x – 1)2 – (x + 2)2 – (4x + 1)∙(4x – 1) = 2 2 NR.3 Calculați 1) 2x – 3x – 5 – x + 4x + 7 = 2) 2∙(8x – 3) – 4x∙(4 – x) = 2 2 3) (3x – 2x – 2)∙(2x – 1) = 4) (3x – 4) = 5) (5x – 2)∙(5x + 2) = 2 2 6) 2 5 3 2 7 3 2 7 3 2 15 7) 14x 2 7 x 2 15x 5 3x 2 8) (x – 3)2 – (2x + 1)2 – (2 + x)∙(2 – x) = 2 2 NR. 4 Calculați 1) 3x – 7x + 2 – 5x + 3x – 4 = 2) 3x∙(5x – 2) – 4∙(7x – 1) = 2 2 3) (2x – 3x + 2)∙(x – 2) = 4) (3 – 2x) = 5) (3x – 4)∙(3x + 4) = 2 2 6) 2 7 2 3 3 2 3 3 2 14 2 7) 14x 7 2x 3 4x 2 2x 1 8) (4x – 1)2 – (5x + 2)2 – (1 + 3x)∙(1 – 3x) = 2 2 Răspuns Test 1 1) 4x2 + 4x + 3. 2) – 4x2 – 18. 3) 2x3 – 7x2 + 5x + 2. 4) 4x2 – 12x + 9. 5) 16x2 – 9. 6) – 33 . 7) 60. 8) – 12x2 – 8x + 4. Test 2 1) x2 – 8x – 5. 2) –6x2 – 5. 3) 3x3 – 13x2 + 13x – 3. 4) 25 – 20x + 4x2 . 5) 4x2 – 25. 6) 4. 7) 24. 8) – 8x2 – 10x – 2. Test 3 1) x2 + x + 2. 2) 4x2 – 6. 3) 6x3– 7x2 – 2x + 2. 4) 9x2 – 24x + 16. 5) 25x2 – 4. 6) 23 . 7) 20. 8) – 2x2 – 10x + 6. Test 4 1) –2x2 – 4x – 2. 2) 15x2 – 34x + 4. 3) 2x3 – 7x2 + 8x – 4. 4) 9 – 12x + 4x2. 5) 9x2 – 16. 6) 25. 7) 42. 8) – 28x – 4.