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  • Maths Online Test Class 8
  • The product of ( x - 3)( x + a) equals x2 - x - 6 then th...
Multiple choice

The product of ( x - 3)( x + a) equals x2 - x - 6 then the value of 'a' is

  1. -2

  2. 2

  3. 3

  4. 4

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Expanding (x - 3)(x + a) = x^2 + ax - 3x - 3a = x^2 + (a - 3)x - 3a. Comparing to x^2 - x - 6, we have a - 3 = -1, so a = 2. Also -3a = -6, so a = 2.

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