2 to the power of 5 / 2 to the power of 3

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Guest Sep 10, 2014

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Best Answer

The question may have been

$$\dfrac{2^5}{2^3}=\frac{2*2*2*2*2}{2*2*2}=\frac{2*2}{1}=2^2=4$$

This can also be done like this $$2^{5-3}=2^2=4$$

Melody Sep 10, 2014

Melody · Answer 1 · 2014-09-10T10:26:04

The question may have been

$$\dfrac{2^5}{2^3}=\frac{2*2*2*2*2}{2*2*2}=\frac{2*2}{1}=2^2=4$$

This can also be done like this $$2^{5-3}=2^2=4$$

Alan · Answer 2 · 2014-09-10T09:33:14

Use the fact that (x^a)^b = x^a*b

(2^5/2)³= 2^15/2 = 2⁷*2^1/2 = 128√2

Alan · Answer 3 · 2014-09-10T10:31:50

You're right Melody! The absence of brackets causes a lot of confusion!

Melody · Answer 4 · 2014-09-10T10:41:19

Yes it always does! Hi Alan