Answers

2014-08-11T21:13:00+08:00
We are given the equation x^2 + 5x + D = 11 + D. In this equation, A is 1, B is 5 and C is 11. Now, we divide B (which is 5) by 2, square it and multiply with A to get D: (5/2)^2 = 25/4 --> x^2 + 5x + (25/4) = 11 + (25/4) --> Factor the quad. equation: (x - (5/2))(x - (5/2)) = 69/4 --> (x - (5/2))^2 - 69/4 = 0.
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2014-08-12T00:57:22+08:00