Question

Simplify

Answer 1

\[k ^{3}\times3k ^{4}\]

Answer 2

\[3k^7\]

Answer 3

\[x^a x^b = x^{a+b}\]

Answer 4

What about this one?
\[\frac{ 4r }{ r^3 }\]
can I cancel one of the r's? and end up with 4/r^2

Answer 5

yes you can cancel them

also

\[\frac{ x^a }{ x^b } = x^{a-b}\]

Answer 6

but 4/r^2 is correct = 4r^(-2)

Answer 7

Thank you!!!