Math, asked by sareayu, 10 months ago

determine the value

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Answered by hemanthkumar94

2 power 3 is 8 and 8minus 1 is 7

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sareayu: but its wrong

hemanthkumar94: no it's correct

s280012: agree. its wrong

s280012: the -1 is in the wrong place

Anonymous: Yeh, the -1 is in the exponent in the question, but it's not clear. A simple mistake really. Give Hemanthkumar94 a break. Apart from that, it's fine.

Anonymous: Although I did just notice that he has "reported" the correct answer below. Haha.

Answered by Anonymous

Answer:

8/5

Step-by-step explanation:

$\displaystyle 5^{3\log_5 2-1} = 5^{3\log_52}\times 5^{-1}\\\\{}\qquad\qquad=\left(5^{\log_52}\right)^3\times 5^{-1}\\\\{}\qquad\qquad=2^3\times 5^{-1}\\\\{}\qquad\qquad=\frac{8}{5}$

sareayu: thanks

Anonymous: You're welcome. Glad to help.

sareayu: sorry...by mistake reported crt ans

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