Question

Simplify the expression. Write the result using positive exponents only.


Choose one answer.
a. x43
b. x41
c. x21
d. x7

Answer 1

x14-7

x7

Answer 2

\[\LARGE \frac{x^a}{x^b}=x^{a-b }\]
do you know this rule ?

Answer 3

no, not really.

Answer 4

how about this:
\[\LARGE x^a\cdot x^b=x^{a+b}\]?

Answer 5

\[\Large {x^6\cdot x^8 \over x^7}={x^{6+8}\over x^7}={x^{14}\over x^7}=x^{14-7}=x^7\]

Answer 6

yeah i get that