Հանրահաշիվ, 9-րդ դասարան

1. Հանրահաշիվ, 9-րդ դասարան
Քառակուսային հավասարումների 144 օրինակ
1. 9x + 8x2 = –1 1. 2 – 9x2 = 0 1. 6 + 3x2 = 8x
2. 3 + 3x2 = 4x 2. –15 – 2x2 = –11x 2. –x2 = 0,4
3. 25 – 10x + x2 = 0 3. –0,36 – x2 = 0 3. –2x2 + 3x = 0
4. 4x – 4x2 = 1 4. 16x + 64 = –x2 4. 8x + 1 = – 7x2
5. 3x2 – 4 = 0 5. 13x + 3x2 = –14 5. 1 + x2 = –2x
6. 9x2 + 8 = 18x 6. 7x2 – 3x = 0 6. –x2 = 9 – 6x
7. 2x = –x2 – 1 7. 5 = 2x – x2 7. 7x = 6x2 – 5
8. 20x + 25x2 = –4 8. 16 + x2 = 8x 8. 13x – 14 – 3x2 = 0
9. –1 – 4x2 = 0 9. 1 – 4x2 + 3x = 0 9. 12 = 11x + 5x2
10. 0,3x – x2 = 0 10. –12x + 4 = –9x2 10. –8x – 16x2 = 1
11. 12 – 17x – 5x2 = 0 11. 10x2 – 2 = x 11. 25 + 4x2 – 20x = 0
12. 7x – 4x2 = –15 12. 25x2 + 40x + 16 = 0 12. 2x2 – 1 = 0
1. 3x2 – x = 24 1. 9x = –2x2 – 10 1. 2x – 3 – x2= 0
2. 4x2 = –4x – 1 2. –6x2 – x = 0 2. x – 4x2 = –5
3. –25 = 10x + x2 3. 11 + x2 + 6x = 0 3. 2 + 3x2 = 4x
4. 17x = 12+ 6x2 4. 4 + x2 = 4x 4. –24x = 9 + 16x2
5. –3x2 = 4x 5. x2 – 1,21 = 0 5. 5x = 2x2
6. 3x2 – 7 = 4x 6. 3x2 = –8 + 11x 6. –x2 +8 = 0
7. 4 = 20x – 25x2 7. 10x + 25 = –x2 7. 14x – x2 = 49
8. 2x = x2 + 1 8. 3x – 10x2 = –4 8. 6x – 1 = 9x2
9. 21x + 9x2 + 10 = 0 9. 2x2 = 27 – 3x 9. 6x2 + 2 = –7x
10. 36 = –4x2 10. 2x – 3 = 2x2 10. 19x – 14 – 6x2 = 0
11. 5 + 4x + x2 = 0 11. 1 = 10x – 25x2 11. 9x + 9x2 = 4
12. 0,5x2 –12 = 12. 9x2 + 4 + 12x = 0 12. x2 + 4 = –4x

2. 1. 12x + 7x2 = –5 1. –6x – x2 = 9 1. 4 – 4x + x2 = 0
2. –2x – 1 = 4x2 2. 2 + 12x2 = 11x 2. 6x – 2x2 = 5
3. 17x + 10x2 = 0 3. –9 – 4x2 + 12x = 0 3. 16 + x2 = –8x
4. 5 – 11x = –2x2 4. 4 + 9x2 = 0 4. 0,9 – x2 = 0
5. 9x2 – 24x = –16 5. 10x + 25x2 = –1 5. –2x = 7x2 – 5
6. 6x2 – 4 = 0 6. x2 + 2,3x = 0 6. –x2 = 8 + 4x
7. –x2 = 36 + 12x 7. –15 = –3x2 7. 9x – x2 = 0
8. 4x – x2 = 7 8. –x2 = 2 + 2x 8. –x + 10x2 = 2
9. –4x2 – 25 = 20x 9. 4 + 3x2 = –7x 9. 12x + 4x2 = –9
10. 3 – 3x2 = 8x 10. 14 – x – 3x2 = 0 10. 7x – 2x2 = 6
11. 7x + 12 – 12x2 = 0 11. x2 + 25 = 10x 11. 40x – 25x2 = 16
12. 9 = 6x – x2 12. –8 = 18x – 5x2 12. 19x + 2x2 + 45 = 0
1. 3x2 – x = 0 1. 7x = –x2 1. x2 = 8x – 17
2. 10 – 7x – 3x2 = 0 2. 9 + x2 = 0 2. 14x = –49 – x2
3. –1 = x2 – 2x 3. –2x2 – 6 = 7x 3. 36 + 17x = –2x2
4. 24x – 9 = 16x2 4. 8x – x2 = 16 4. 7x2 – 3x = 4
5. 6x2 = 15 – x 5. 16x2 = 8x – 1 5. 6x + 9x2 = –1
6. –1,2 = –0,02x2 6. 30 x + 9 = –25x2 6. 0,81 – x2 = 0
7. –x2 = 16 7. 5x + 3 –12x2 = 0 7. 5x + 9x2 = 0
8. 4x = –x2 – 4 8. –2x2 + 0,32 = 0 8. 1 + 2x = 8x2
9. 12 + 3x2 = 20x 9. 7 = –2x2 – 6x 9. 19x – 6x2 – 10 = 0
10. 9x2 = –25 – 30x 10. 36 + x2 = 12x 10. 8 + 2x2 = 0
11. –3x2 – 6x = 4 11. x = 6 – 5x2 11. 40x – 25 – 16x2 = 0
12. 10x = –8x2 – 3 12. 20 + 3x2 = 17x 12. –36 – x2 = –12x