Question #73eb1
2 Answers
See below.
Explanation:
To make things easier, you need to know that:
Using this and starting with the numerator:
So our numerator is now:
Our denominator is:
So we have:
Put together:
The answer can be found by expanding and cancelling.
Explanation:
Some things to keep in mind are:
- an exponent means the number multiplied by itself, for example
#4^3# =#4*4*4# , - a negative exponent is the inverse of the number multiplied by itself:
#4^-3 = 1/4*1/4*1/4# - any number divided by itself is one:
#3/3=1# .
Using this we can first expand the numerator (here I am assuming the question is asking
or
Knowing that any number divided by itself = 1, this becomes
or
We can see that with the 4's, multiplying
so: