- 2x + 1 = 0
70) x2 - 8x - 33 = 0
71) x2 + 3x + 2 = 0
72) x2 + 14x - 51 = 0
73) x2 + 13x + 22 = 0
74) x2 + 8x - 33 = 0
75) x2 + 6x - 91 = 0
76) x2 + 8x + 15 = 0
77) x2 - 11x - 26 = 0
78) x2 + 9x + 14 = 0
79) x2 - 14x - 51 = 0
80) x2 + 7x + 10 = 0
81) x2 + 1x - 2 = 0
82) x2 + 6x - 55 = 0
83) x2 + 2x + 1 = 0
84) x2 + 6x + 5 = 0
85) x2 - 6x - 55 = 0
86) x2 + 18x + 17 = 0
87) x2 + 8x - 65 = 0
88) x2 + 20x + 51 = 0
89) x2 + 14x + 49 = 0
90) x2 - 10x - 11 = 0
91) x2 - 15x - 34 = 0
92) x2 - 10x - 39 = 0
93) x2 + 8x + 7 = 0
94) x2 - 16x - 17 = 0
95) x2 + 12x + 35 = 0
96) x2 + 18x + 77 = 0
97) x2 + 14x + 33 = 0
98) x2 + 18x + 65 = 0
99) x2 + 19x + 34 = 0
100) x2 + 5x + 6 = 0
101) x2 + 10x + 21 = 0
102) x2 + 14x + 13 = 0
103) x2 + 24x + 119 = 0
104) x2 + 6x + 9 = 0
105) x2 + 20x + 91 = 0
106) x2 + 22x + 85 = 0
107) x2 + 15x + 26 = 0
108) x2 + 16x + 39 = 0
109) x2 + 10x + 25 = 0
110) x2 + 4x + 4 = 0
Приложение 2. Ответы.
1) x1 = 3; x2 = 7 | 2) x1 = 1; x2 = 7 | 3) x1 = 3; x2 = 3 |
4) x1 = 1; x2 = 11 | 5) x1 = 5; x2 = 7 | 6) x1 = -1; x2 = -11 |
7) x1 = 3; x2 = 13 | 8) x1 = -5; x2 = 2 | 9) x1 = 2; x2 = -11 |
10) x1 = 7; x2 = -3 | 11) x1 = 3; x2 = 17 | 12) x1 = -7; x2 = 17 |
13) x1 = 7; x2 = -2 | 14) x1 = 7; x2 = 17 | 15) x1 = 2; x2 = -7 |
16) x1 = 5; x2 = 17 | 17) x1 = 1; x2 = 17 | 18) x1 = 7; x2 = 2 |
19) x1 = -5; x2 = 3 | 20) x1 = 3; x2 = 1 | 21) x1 = 7; x2 = 7 |
22) x1 = -1; x2 = 13 | 23) x1 = -2; x2 = 3 | 24) x1 = 3; x2 = -1 |
25) x1 = 2; x2 = 13 | 26) x1 = 3; x2 = 5 | 27) x1 = 5; x2 = -7 |
28) x1 = 1; x2 = -3 | 29) x1 = 2; x2 = 17 | 30) x1 = -1; x2 = 7 |
31) x1 = -5; x2 = -11 | 32) x1 = 2; x2 = 5 | 33) x1 = 2; x2 = 2 |
34) x1 = 7; x2 = -11 | 35) x1 = 7; x2 = -17 | 36) x1 = 1; x2 = 2 |
37) x1 = 2; x2 = 3 | 38) x1 = 5; x2 = -17 | 39) x1 = 3; x2 = 11 |
40) x1 = -3; x2 = 5 | 41) x1 = 3; x2= -13 | 42) x1 = 7; x2 = 13 |
43) x1 = 2; x2 = -17 | 44) x1 = 1; x2 = -5 | 45) x1 = 5; x2 = 13 |
46) x1 = 2; x2 = -3 | 47) x1 = -7; x2 = 11 | 48) x1 = 1; x2 = -7 |
49) x1 = 1; x2 = -17 | 50) x1 = -5; x2 = 7 | 51) x1 = 5; x2 = 5 |
52) x1 = 2; x2 = 11 | 53) x1 = 1; x2 = 5 | 54) x1 = -1; x2 = 2 |
55) x1 = -7; x2 = 3 | 56) x1 = -7; x2 = 13 | 57) x1 = 1; x2 = -11 |
58) x1 = 5; x2 = 11 | 59) x1 = 1; x2 = 13 | 60) x1 = 5; x2 = -1 |
61) x1 = 7; x2 = 11 | 62) x1 = 1; x2 = -13 | 63) x1 = -2; x2 = 5 |
64) x1 = -5; x2 = 13 | 65) x1 = -5; x2 = 17 | 66) x1 = -2; x2 = 11 |
67) x1 = 2; x2 = -13 | 68) x1 = -3; x2 = -1 | 69) x1 = 1; x2 = 1 |
70) x1 = -3; x2 = 11 | 71) x1 = -1; x2 = -2 | 72) x1 = 3; x2 = -17 |
73) x1 = -2; x2 = -11 | 74) x1 = 3; x2 = -11 | 75) x1 = 7; x2 = -13 |
76) x1 = -3; x2 = -5 | 77) x1 = -2; x2 = 13 | 78) x1 = -2; x2 = -7 |
79) x1 = -3; x2 = 17 | 80) x1 = -5; x2 = -2 | 81) x1 = -2; x2 = 1 |
82) x1 = 5; x2 = -11 | 83) x1 = -1; x2 = -1 | 84) x1 = -1; x2 = -5 |
85) x1 = -5; x2 = 11 | 86) x1 = -1; x2 = -17 | 87) x1 = 5; x2 = -13 |
88) x1 = -3; x2 = -17 | 89) x1 = -7; x2 = -7 | 90) x1 = -1; x2 = 11 |
91) x1 = -2; x2 = 17 | 92) x1 = -3; x2 = 13 | 93) x1 = -1; x2 = -7 |
94) x1 = -1; x2 = 17 | 95) x1 = -5; x2 = -7 | 96) x1 = -7; x2 = -11 |
97) x1 = -3; x2 = -11 | 98) x1 = -5; x2 = -13 | 99) x1 = -2; x2 = -17 |
100) x1 = -2; x2 = -3 | 101) x1 = -3; x2 = -7 | 102) x1 = -1; x2 = -13 |
103) x1 = -7; x2 = -17 | 104) x1 = -3; x2 = -3 | 105) x1 = -7; x2 = -13 |
106) x1 = -5; x2 = -17 | 107) x1 = -2; x2 = -13 | 108) x1 = -3; x2 = -13 |
109) x1 = -5; x2 = -5 | 110) x1 = -2; x2 = -2 |
Приложение 3. Усложненные задачи.
1) x2 - 19x + 78 = 0 | 2) x2 - 16x + 39 = 0 | 3) x2 + 2x - 8 = 0 |
4) x2 - 15x + 14 = 0 | 5) x2 - 12x + 35 = 0 | 6) x2 + 36x + 35 = 0 |
7) x2 + 3x - 70 = 0 | 8) x2 + 13x - 30 = 0 | 9) x2 - 21x + 68 = 0 |
10) x2 - 17x + 70 = 0 | 11) x2 - 7x + 10 = 0 | 12) x2 - 10x - 75 = 0 |
13) x2 - 17x + 66 = 0 | 14) x2 - 4x - 21 = 0 | 15) x2 - 18x + 65 = 0 |
16) x2 + 5x - 14 = 0 | 17) x2 - 7x - 98 = 0 | 18) x2 - 18x + 45 = 0 |
19) x2 + 22x - 75 = 0 | 20) x |