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  1. If x = 99, then the value of 2(x2 + 3x + 3 ) is equal to
    1. 1000001
    2. 1000000
    3. 999999
    4. 9999999
    5. None of these
Correct Option: E

x2 + 3x + 3
= x2 + 2x + 1 + x + 2
= (x + 1)2 + x + 2
= (99 + 1)2 + 99 + 2
= (100)2 + 101
= 10000 + 101 = 10101
∴  2(x2 + 3x + 3 ) = 2 × 10101 = 20202


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