#Multiplying & Dividing Surds (Year 10)

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brazen saffron
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Quick question. Can the number in a square root be ‘1’? Sorry if this sounds stupid. Also here is the working out/answer to the question below

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frosty tokenBOT
coral rover
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sqrt(1)=1

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sqrt(0)=0

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But in context of real numbers, number in square root cannot be negative

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Because there is no real number X, such that X^2<0