Mathematics 17 Online
OpenStudy (anonymous):

How do I simplify (3a^2b / -4xy) x (-5x^2y / 6ab^2)? Please help D; I am so confused with my steps..

OpenStudy (anonymous):

3a^2 -5x^2y ---- x ------- -4xy 6ab^2 = a(3ab) -x(5xy) ------- x --------- 2(-2xy) 2b(3ab)

OpenStudy (anonymous):

I thought I answered it. :-) What part is confusing?

OpenStudy (anonymous):

Is it that step? I'm so confused..

OpenStudy (anonymous):

*3a^2b

OpenStudy (anonymous):

is it a^2 b or a^(2b)

OpenStudy (anonymous):

Basic concept here is that if there is a variable in the numerator and denominator, you can get rid of that variable. For example, in your equation, you have y in the numerator and y in the denominator. Get rid of it. Then, you have a^2 in the numerator and a in the denominator. So, there will be a left in the numerator. Keep going on, including for constants until nothing else can be cancelled out.

OpenStudy (anonymous):

ohh.. i see. ohhh!!

OpenStudy (anonymous):

I think I know what you mean! Thank you!

OpenStudy (anonymous):

OpenStudy (anonymous):

Is it like 3a - 5x ------ -24b

OpenStudy (anonymous):

You mean (3a) (-5x)/(-24b). You can further simplify by canceling 3 in numerator against 24 in the denominator. Same with the (-1) in the numerator with (-1) in the denominator. So, you end up with ....?

OpenStudy (anonymous):

Is it going to be: (a-5x)/-8b? What do you mean by the (-1)?