The document contains 144 examples of quadratic equations arranged in 12 sections with 12 examples each. The examples include single variable quadratic equations with real number coefficients that can be solved using techniques like factoring, completing the square, and using the quadratic formula. Overall the document provides a large collection of example problems working with quadratic equations.

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