How do you factor these? The split middle term doesn't work.
-6a^2 - 5a -1
product = 6, sum = -5
-6a^2 + a - 6a -1
(-6a^2 + a) - (6a + 1)
a(-6a + 1) - (6a + 1)
(-6a + 1) (a - 1) -> this is not giving me the same answer if foil
25a^2 -10a + 1
product = 25, sum = -10
?? -> cannot find 2 numbers whose product is 25 and difference is -10
12x^2 +17xy + 6y^2
?? -> Two terms with ^2, how do you do this?
-30x^3 + 2x^2 + 12x
?? -> One term with ^3 and another with ^2, how do you do this?