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  1. The minimum value of (x – 2) (x – 9) is
    1. −
      11
      4
    2. 49
      4
    3. 0
    4. −
      49
      4
Correct Option: D

Expression = (x – 2) (x – 9)
= x² – 11x + 18 = ax² + bx + c

Minimum value =
4ac - b²
4a

=
4 × 1 × 18 - 121
 =
- 49
44


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