Equacions 2n grau incompletes1
| __ | 1. | (2x-4)·(4x-1) = -18x+36 | | A. | x = -1 i x = 1 | | __ | 2. | (x+1)(x-1) = 0 | | B. | x = -5 i x = 5 | | __ | 3. | -3x2 = 162 - 5x2 | | C. | x = -3 i x = 3 | | __ | 4. | 2(2x2 - 32)= 0 | | D. | x= 4 i x = -4 | | __ | 5. | 3(x2-100) =0 | | E. | x = -6 i x = 6 | | __ | 6. | 3x2 - 75=0 | | F. | x = -9 i x = 9 | | __ | 7. | 4(x2 -2x)= 196- 8x | | G. | x = -7 i x = 7 | | __ | 8. | 5(x2-4) = 160 | | H. | x = -10 i x = 10 | | __ | 9. | 6(x2-2x+4) - 384= -12x + 24 | | I. | x = -8 i x = 8 | | __ | 10. | 7x2 = 63 | | J. | x = -2 i x = 2 |
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