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The first two. In fact, you have
and is irrational.
Similarly, is irrational, and the same goes for
.
Instead, the square root and the second power simplify in the third option:
and similarly,
Answer:
feet further.
Step-by-step explanation:
Since these are mixed numbers that are both in fourths, we can easily subtract the two numbers. However, I find it easier if we first convert both mixed numbers into improper fractions.
Now we can subtract the numerators:
simplifies down to
.
Converting to a mixed number is easy - 2 goes into 9 4 times (8) with one remainder so:
.
Hope this helped!