Question

Simplify each expression.
4. 3m^3 - 3m over 6m^4 * 4m^5 over m + 1

Answer 1

\[\frac{3m^3-3m}{6m^4}\times\frac{4m^5}{m+1}\]

Answer 2

Pull 3m out of the first numerator

Answer 3

yes

Answer 4

\[\frac{3m(m^2-1)}{6m^4}\times\frac{4m^5}{m+1}\]

Answer 5

Is that what you got?

Answer 6

yes

Answer 7

Now factor m^2-1

Answer 8

(m-1) (m+1)

Answer 9

\[\frac{3m(m-1)(m+1)}{6m^4}\times\frac{4m^5}{m+1}\]

Answer 10

Now cancel all common factors

Answer 11

cancelled out the (m + 1)

Answer 12

What about cancelling 3?

Answer 13

What about 2?

Answer 14

what do you mean?

Answer 15

How about m^4?