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Factorise axΒ² + bx + c

10th grade (Year 11 in England) Β· 16 questions Β· Common Core: HSA.SSE.A.2 Β· England: GCSE Higher Algebra

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  1. Question 1

    Factorise: 3xΒ² βˆ’ 5x + 2

    • A. (3x βˆ’ 2)(x βˆ’ 1)
    • B. (3x βˆ’ 1)(x βˆ’ 2)
    • C. (3x + 2)(x + 1)
    • D. (x βˆ’ 2)(3x βˆ’ 1)
  2. Question 2

    Factorise: 4xΒ² βˆ’ 25x + 6

    • A. (4x βˆ’ 1)(x βˆ’ 6)
    • B. (4x βˆ’ 6)(x βˆ’ 1)
    • C. (x βˆ’ 1)(4x βˆ’ 6)
    • D. (4x + 1)(x + 6)
  3. Question 3

    Factorise: 5xΒ² βˆ’ 28x βˆ’ 12

    • A. (5x βˆ’ 2)(x + 6)
    • B. (5x + 2)(x βˆ’ 6)
    • C. (x + 2)(5x βˆ’ 6)
    • D. (5x βˆ’ 6)(x + 2)
  4. Question 4

    Factorise: 5xΒ² βˆ’ 5

    • A. (5x + 1)(x βˆ’ 5)
    • B. (5x βˆ’ 5)(x + 1)
    • C. (x βˆ’ 5)(5x + 1)
    • D. (5x + 5)(x βˆ’ 1)
  5. Question 5

    Factorise: 2xΒ² βˆ’ 5x βˆ’ 7

    • A. (2x + 7)(x βˆ’ 1)
    • B. (2x βˆ’ 7)(x + 1)
    • C. (x βˆ’ 7)(2x + 1)
    • D. (2x + 1)(x βˆ’ 7)
  6. Question 6

    Factorise: 5xΒ² + 30x + 25

    • A. (x + 5)(5x + 5)
    • B. (5x βˆ’ 5)(x βˆ’ 5)
    • C. (5x + 5)(x + 5)
  7. Question 7

    Factorise: 4xΒ² + 19x + 21

    • A. (4x + 7)(x + 3)
    • B. (4x + 3)(x + 7)
    • C. (x + 7)(4x + 3)
    • D. (4x βˆ’ 7)(x βˆ’ 3)
  8. Question 8

    Factorise: 2xΒ² + 6x βˆ’ 20

    • A. (2x βˆ’ 4)(x + 5)
    • B. (2x + 4)(x βˆ’ 5)
    • C. (2x + 5)(x βˆ’ 4)
    • D. (x βˆ’ 4)(2x + 5)
  9. Question 9

    Factorise: 2xΒ² βˆ’ x βˆ’ 1

    • A. (x + 1)(2x βˆ’ 1)
    • B. (2x + 1)(x βˆ’ 1)
    • C. (2x βˆ’ 1)(x + 1)
  10. Question 10

    Factorise: 2xΒ² βˆ’ 6x βˆ’ 20

    • A. (2x βˆ’ 4)(x + 5)
    • B. (x + 4)(2x βˆ’ 5)
    • C. (2x βˆ’ 5)(x + 4)
    • D. (2x + 4)(x βˆ’ 5)
  11. Question 11

    Factorise: 5xΒ² βˆ’ 13x βˆ’ 28

    • A. (5x βˆ’ 7)(x + 4)
    • B. (5x βˆ’ 4)(x + 7)
    • C. (x + 7)(5x βˆ’ 4)
    • D. (5x + 7)(x βˆ’ 4)
  12. Question 12

    Factorise: 4xΒ² βˆ’ 14x + 6

    • A. (4x βˆ’ 3)(x βˆ’ 2)
    • B. (4x βˆ’ 2)(x βˆ’ 3)
    • C. (x βˆ’ 2)(4x βˆ’ 3)
    • D. (4x + 2)(x + 3)
  13. Question 13

    Factorise: 4xΒ² + 3x βˆ’ 7

    • A. (x + 7)(4x βˆ’ 1)
    • B. (4x βˆ’ 7)(x + 1)
    • C. (4x βˆ’ 1)(x + 7)
    • D. (4x + 7)(x βˆ’ 1)
  14. Question 14

    Factorise: 5xΒ² βˆ’ 14x βˆ’ 24

    • A. (5x + 6)(x βˆ’ 4)
    • B. (5x βˆ’ 6)(x + 4)
    • C. (5x βˆ’ 4)(x + 6)
    • D. (x + 6)(5x βˆ’ 4)
  15. Question 15

    Factorise: 2xΒ² + 6x βˆ’ 8

    • A. (2x + 4)(x βˆ’ 2)
    • B. (2x βˆ’ 2)(x + 4)
    • C. (x βˆ’ 2)(2x + 4)
    • D. (2x + 2)(x βˆ’ 4)
  16. Question 16

    Factorise: 5xΒ² + 30x + 25

    • A. (x + 5)(5x + 5)
    • B. (5x βˆ’ 5)(x βˆ’ 5)
    • C. (5x + 5)(x + 5)

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Answer key: Factorise axΒ² + bx + c

  1. 1. A. (3x βˆ’ 2)(x βˆ’ 1)

  2. 2. A. (4x βˆ’ 1)(x βˆ’ 6)

  3. 3. B. (5x + 2)(x βˆ’ 6)

  4. 4. B. (5x βˆ’ 5)(x + 1)

  5. 5. B. (2x βˆ’ 7)(x + 1)

  6. 6. C. (5x + 5)(x + 5)

  7. 7. A. (4x + 7)(x + 3)

  8. 8. A. (2x βˆ’ 4)(x + 5)

  9. 9. B. (2x + 1)(x βˆ’ 1)

  10. 10. D. (2x + 4)(x βˆ’ 5)

  11. 11. D. (5x + 7)(x βˆ’ 4)

  12. 12. B. (4x βˆ’ 2)(x βˆ’ 3)

  13. 13. D. (4x + 7)(x βˆ’ 1)

  14. 14. A. (5x + 6)(x βˆ’ 4)

  15. 15. B. (2x βˆ’ 2)(x + 4)

  16. 16. C. (5x + 5)(x + 5)