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Naily [24]
3 years ago
13

Pls give an explanation w your answer

Mathematics
2 answers:
Shalnov [3]3 years ago
4 0
a^{\frac{1}{n}}=\sqrt[n]{a}\\\\\left(a^n\right)^m=a^{n\cdot m}\\\\a^n\cdot a^m=a^{n+m}
therefore
64^\frac{1}{4}=\left(2^6\right)^\frac{1}{4}=2^{6\cdot\frac{1}{4}}\\\\=2^\frac{6}{4}=2^{1\frac{2}{4}}=2^{1+\frac{2}{4}}=2\cdot2^\frac{2}{4}\\\\=2\sqrt[4]{2^2}=2\sqrt[4]4
Other method:
64^\frac{1}{4}=\sqrt[4]{64}=\sqrt[4]{16\cdot4}=\sqrt[4]{16}\cdot\sqrt[4]4=2\sqrt[4]4


<span />

lara31 [8.8K]3 years ago
4 0
For this case we have the following expression:
 64 ^ (1/4)
 Rewriting we have:
 4 ^ root (64)
 4 ^ root (2 * 2 * 2 * 2 * 4)
 For power properties we have:
 4 ^ root ((2 ^ 4) * 4)
 2 * (4 ^ root (4))
 Answer:
 
2 * (4 ^ root (4))
 
option 1
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9/10-1/3-1/5 find the fraction
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Change all the denominators to 30 by multiplying the top and bottom by the same number.

9/10=27/30
1/3=10/30
1/5=6/30

Subtract!
27/39-10/30-6/30=11/30

The answer is 11/30

Hope this helps!



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