Answers

2014-06-08T11:21:10+08:00
X2-x=5x-15+x2
-5x+x2-x2=-15
-5x=-15
1 5 1
2014-06-08T11:40:23+08:00
X(x-1) = 5(x-3) + x²
x² - x = 5x -15 + x²
combine like terms
x² - x² = x + 5x -15
0 = 6x - 15
0 = 3 (2x - 5)
0