I understand now, how to do the simple ones(hardly). The ^before a number indicates its to the __ power. ( x^2= x to the second power)
x^2(x^3+2) = x^5 + 2x^2
So I understand that you multiply x^2 by x^3 and 2.But what do you do when you have three or more things to multiply in the first part.Hereis the problem:
( 3x-1)(4x^2 - 2x- 1)
Do I first look for like terms? Or do I stick with trying to multiply like this - ( I changed eached number to a letter)
(ab- c)(de^2- fg- h)= ad- ae^2- af- ag- ah - bd- be^2- bf-bg-bh
(and so on and so forth)
Basiclly, what I am asking is, do I have to multiply A,B&C each by D,E^2,F,G&H ???? So, no matter how many variables there are in the first part, I just multiply each by problems in the second half??
Also, What do I do if there are variables outside of the parenthesis? Multiply these the same? And how do I know whether to put a multiplication/add/subtract sig between each part. I know you would put subtractions signs in some areas on this problem, but once you have finished multiplying A by everything on the other side, do you put a mult. symbol between that and the B`s that you multiply next?
sorry. please, if someone could explain, i would be so greatful