I can do the basic ones, but when they have a coefficient in front of the first term I dont know what to do.
I thought maybe you do
Edit nevermind That is right.
BUt is there a better way to solve these other than putting the first term in the first bracket and the guessing at multiples of the last term?
because with one like 6sin^2x+sinx-1 I get (6sinx-1)(sinx+1)
and its supposed to be(2sinx-1)(3sinx-1)
Im confused with factoring these, could I have some help please.
Do you mean
Since the second one factors I will assume you meant that one:
Let u = cos(x) :
This would equal (2u )(u ). The other numbers will be 1 and 3 and there will be two minus signs (because the last term is positive). The sum of 2 times one of them plus the other will be equal to -7.