Answers

2014-06-19T15:15:49+08:00
1. (x+9)(x-2)
2. (x-7)(x+3)
3. I believe the original equation is 2x² - 5x + 3 = 0
    (2x -3)(x-1)
4. (3x-2)(2x+1)
0
2014-06-19T15:43:36+08:00
Solution for no. 1. x^2+7x-18 = (x)(x)+(x)(9)-(2)(x)-(2)(9)
                                          = x^2+9x-2x-18
                                          = (x-2)(x+9)---> ans.
1 5 1