Uploaded by Stela Birdan

calcul algebric teste

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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.
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