4 years ago

Evaluate 2³•8²=2•22•8•8=8•64=512

1 answer:

6 0

2^3 =8
8^2=64
64*8= 512

2*22=44
44*8=352
352*8=2816

I think it is suppose to be 2*2*2*8*8 and not 2•22•8•8 (btw u gave us the answer already)

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katrin2010 [14]

For this case we must find an expression equivalent to:

$\frac {\sqrt [7] {x ^ 2}} {\sqrt [5] {y ^ 3}}$

By definition of properties of powers and roots we have:

$\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}$

So, rewriting the expression we have:

$\frac {x ^ {\frac {2} {7}}} {y ^ {\frac {3} {5}}} =$

By definition of power properties we have:

$a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}$

So:

$x ^ {\frac {2} {7}} * y ^ {- \frac {3} {5}}$

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Option A

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pashok25 [27]

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