factor 6x^2-17x+5?

2008-07-07 7:51 am

回答 (4)

2008-07-07 8:10 am
✔ 最佳答案
6x^2 - 17x + 5 = 0
6x^2 - 15x - 2x + 5 = 0
3x (2x - 5) -1 (2x - 5) = 0
(3x - 1) (2x - 5) = 0
x = 1/3 or 5/2
2008-07-07 3:38 pm
6x^2 - 17x + 5
= 6x^2 - 2x - 15x + 5
= (6x^2 - 2x) - (15x - 5)
= 2x(3x - 1) - 5(3x - 1)
= (3x - 1)(2x - 5)
2008-07-07 3:07 pm
(3x - 1)(2x - 5)
2008-07-07 2:55 pm
it can be factored at (3x-1)(2x-5). You may check the answer by multiplying (FOIL) the answer (3x-1)(2x-5) = 6x^2 -15x -2x +5 = 6x^2 -17x +5


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