# simplify the expression

• May 21st 2012, 09:16 AM
user38989
simplify the expression
X^14
______
X^7

They only two I could think of is X^7 or X^21.
The correct answer would be wonderful thanks
• May 21st 2012, 09:59 AM
skeeter
Re: simplify the expression
$\frac{x^a}{x^b} = x^{a-b}$
• May 22nd 2012, 10:20 AM
HallsofIvy
Re: simplify the expression
Or:
$\frac{X^{14}}{X^7}= \frac{X(X)(X)(X)(X)(X)(X)(X)(X)(X)(X)(X)(X)(X)}{X( X)(X)(X)(X)(X)(X)}= X(X)(X)(X)(X)(X)(X)= X^7$
because the 7 "X"s in the denominator cancel 7 of the 14 "X"s in the numerator leaving 14- 7= 7 "X"s.