Math, asked by Anonymous, 25 days ago

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Answered by karmaan958
2

Step-by-step explanation:

1. 15x² + 52x + 45

= 15x² + 25x + 27x + 45

= 5x(3x + 5) + 9(3x + 5)

= (3x +5)(5x + 9)

2. 8x² + 26x + 20

= 8x² + 16x + 10x + 20

= 8x(x + 2) + 10(x + 2)

= (x + 2)(8x + 10)

3. 48x² + 14x + 1

= 48x² + 6x + 8x + 1

= 6x(8x + 1) + 1(8x + 1)

= (8x + 1)(6x + 1)

4. 21x² - x - 2

= 21x² - 7x + 6x - 2

= 7x(3x - 1) + 2(3x - 1)

= (3x - 1)(7x + 2)

5. 8x² - 25x + 18

= 8x² - 16x - 9x + 18

= 8x(x - 2) - 9(x - 2)

= (x - 2)(8x - 9)

6. 15x² - 25x - 40

= 15x² - 40x + 15x - 40

= 5x(3x - 8) + 5(3x - 8)

= (3x - 8)(5x + 5)

7. 45x² + 46x -63

= 45x² + 81x - 35x - 63

= 9x(5x + 9) - 7(5x + 9)

= (5x + 9)(9x - 7)

8. 81x² + 99x + 28

= 81x² + 63x + 36x + 28

= 9x(9x + 7) + 4(9x + 7)

= (9x + 7)(9x + 4)

9. 6x² - 21x + 9

= 6x² - 18x - 3x + 9

= 6x(x - 3) - 3(x - 3)

= (x - 3)(6x - 3)

10. 20x² - 71x + 63

= 20x² - 35x - 36x + 63

= 5x(4x - 7) - 9(4x - 7)

= (4x - 7)(5x - 9)

11. 6x² - 34x + 20

= 6x² - 30x - 4x + 20

= 6x(x - 5) - 4(x - 5)

= (x - 5)(6x - 4)

12. 16x² - 20x - 6

= 16x² - 24x + 4x - 6

= 8x(2x - 3) + 2(2x - 3)

= (2x - 3)(8x + 2)

13. 7x² - 23x + 6

= 7x² - 21x - 2x + 6

= 7x(x - 3) - 2(x - 3)

= (x - 3)(7x - 2)

14. 7x² - 50x + 48

= 7x² - 42x - 8x + 48

= 7x(x - 6) - 8(x - 6)

= (x - 6)(7x - 8)

15. 21x² + 50x - 16

= 21x² + 56x - 6x - 16

= 7x(3x + 8) - 2(3x + 8)

= (3x + 8)(7x - 2)

16. 12x² + 28x + 8

= 12x² + 24x + 4x + 8

= 12x(x + 2) + 4(x + 2)

= (x + 2)(12x + 4)

17. 6x² - 13x - 15

= 6x² - 18x + 5x - 15

= 6x(x - 3) + 5(x - 3)

= (x - 3)(6x + 5)

18. 28x² - 46x + 16

= 28x² - 32x - 14x + 16

= 4x(7x - 8) - 2(7x - 8)

= (7x - 8)(4x - 2)

19. 16x² + 44x + 10

= 16x² + 4x + 40x + 10

= 4x(4x + 1) + 10(4x + 1)

= (4x + 1)(4x + 10)

20. 21x² + 25x - 4

= 21x² + 28x - 3x - 4

= 7x(3x + 4) - 1(3x + 4)

= (3x + 4)(7x - 1)

Answered by itzurlover23
0

Answer:

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