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Andreas93 [3]
3 years ago
7

2^5/2 –2^3/2 please help me solve step by step please.

Mathematics
1 answer:
Ivan3 years ago
4 0
So 2^{ \frac{5}{2} } is the same as \sqrt{ 2^{5} } and therefore 2^{ \frac{3}{2} } is \sqrt{ 2^{3} }. 

So.. the \sqrt{32} minus \sqrt{8}.

We can pull a 4 out of the 32 to make 4\sqrt{2} as 16 times 2 is 32
We can pull a 2 out of the 8 to make 2\sqrt{2}. 
Now they have like bases, so to speak, and 4-2 is 2.
So the answer is 2\sqrt{2}.
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Answer: (A) The number is 14

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