Jawabanmu

2014-09-07T19:18:55+07:00
1. 5x^2 - x + 25x - 5 = 5x^2 + 24x - 5
2. 14x - 49 - 4x^2 + 14x = -4x^2 + 28x - 49
2014-09-07T19:20:01+07:00
1. 5 x^{2} - 1x + 25x -5
2. 14x - 49 - 4 x^{2}  + 14x
    = -4 x^{2} + 14x + 14x - 49
    = -4 x^{2}  + 28x - 49

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