Mathematics
Grade10
Easy

Question

What is the factored form of x squared minus 2 x minus 8 ?

  1. (x - 1) (x + 3)    
  2. (x + 4) (x + 1)    
  3. (x + 1) (x - 5)    
  4. (x + 2) (x - 4)    

The correct answer is: (x + 2) (x - 4)


    x squared minus 2 x minus 8 equals x squared minus 4 x plus 2 x minus 8
    = x(x - 4) + 2(x - 4)
    = (x + 2)(x - 4)

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