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Section1 Q3

3.If y = 5x^2 - 2x then y =
(A) 24
(B) 27
(C) 39
(D) 51
(E) 219

Answer: C
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2 comments:

  1. Blog CreatorJanuary 26, 2010 at 4:30 AM

    Solution:
    Simply substitute x = 3 in equation.

    y = 5 * 3^2 - 2 * 3
    y = 5*9 - 6
    y = 39

    ReplyDelete
  2. AnonymousJune 2, 2010 at 5:14 PM

    You need to give x in the problem.

    ReplyDelete

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