i got (-4+-1X) (3+-1X) is this right?
A abbie New member Joined Aug 28, 2008 Messages 4 Aug 28, 2008 #1 i got (-4+-1X) (3+-1X) is this right?
mmm4444bot Super Moderator Joined Oct 6, 2005 Messages 10,962 Aug 29, 2008 #2 Yes, that is correct, but your notation is very wrong. We need to use standard notation. Do not write 1X to represent one X. Just write X instead. (-4+-X)(3+-X) Do not write +- to express the addition of a negative number. This is subtraction, so just write -. (-4-X)(3-X) This is okay, but some people would say that it is not "standard" enough. Write the variables first. (-X-4)(-X+3) Multiply each factor by -1 (which is the same as multiplying the entire expression by 1) so that we don't have -Xs. (X+4)(X-3) I say to put spaces around operators to make it easier to read. (X + 4)(X - 3) ~ Mark
Yes, that is correct, but your notation is very wrong. We need to use standard notation. Do not write 1X to represent one X. Just write X instead. (-4+-X)(3+-X) Do not write +- to express the addition of a negative number. This is subtraction, so just write -. (-4-X)(3-X) This is okay, but some people would say that it is not "standard" enough. Write the variables first. (-X-4)(-X+3) Multiply each factor by -1 (which is the same as multiplying the entire expression by 1) so that we don't have -Xs. (X+4)(X-3) I say to put spaces around operators to make it easier to read. (X + 4)(X - 3) ~ Mark