The equation you provided seems to be missing some context or additional operators. However, if we interpret it as a mathematical expression involving x raised to a power, x^5 = 243, you can solve it as follows:
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Rewrite the equation: \( x^5 = 243 \)
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To isolate x, take the fifth root of both sides: \( x = 243^{1/5} \)
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Calculate \( 243 \): \( 243 = 3^5 \)
So, \( x = (3^5)^{1/5} = 3 \)
Therefore, the correct answer from the options given is 3.