3x^2 -7x +2
Ok, first find the factors of the x^2 term and the constant term (2):
3 has 3, 1, -3, & -1
2 has 2 ,1, -2, & -1
Which products can you add or subtract together to make -7 but will still multiply together to give you the same equation as you started with?:
-3 * 2 = -6
-1 * 1 = -1 we got the middle term now lets see if this will give us the same
-1 - 6 = -7 equation we started with.
(-3x + 1)(-x +2) = (-3x)(-x) + (-3x)(2) + (-x) + 2 = 3x^2 -7x + 2
Horray we did it! :D
(-3x + 1)(-x + 2) is your factored form.