Exponents?!?!

2011-05-30 9:04 am
What is x? I just can't figure it out!?!

(1/5)^x * (1/4)^18 = 1 / (2(10^35))

Thanks!

回答 (1)

2011-05-30 9:21 am
✔ 最佳答案
(1/5)^x* (1/4)^18 = 1 / (2(10^35))

(1/5^x) * (1/2^2)^18 = 1 / [2(2 * 5)^35]

(1/5^x) * (1/2)^36 = 1 / [2(2^35 * 5^35)]

1/(5^x *2^36) = 1 / (5^35 * 2^36)

Hence, x = 35
參考: miraco


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