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181. If ‘x’ is a positive real number and exponents are rational numbers, simplify:

open parentheses straight x to the power of straight b over straight x to the power of straight c close parentheses to the power of left parenthesis b plus c plus negative a right parenthesis end exponent cross times open parentheses x to the power of c over x to the power of a close parentheses to the power of left parenthesis c plus a minus b right parenthesis end exponent cross times open parentheses x to the power of a over x to the power of b close parentheses to the power of left parenthesis a plus b plus negative c right parenthesis end exponent

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182. Which of the following is a rational number?

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183. 2. π is:

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184. The decimal form of

56 over 1000 space i s

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185. The value of

fourth root of left parenthesis 64 right parenthesis to the power of negative 2 end exponent end root

is:

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186. A number is an irrational if and only if its decimal representation is:

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187.

The value of $fourth root of cube root of 2 squared end root end root$ is equal to:

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188. Which one of the following is an irrational number?

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189.

left parenthesis 5 plus square root of 5 right parenthesis open parentheses 5 minus square root of 5 close parentheses

on simplification gives:

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square root of 2

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