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21 July, 05:41

An expression is shown below:

square root of 18 plus square root of 2

Which statement is true about the expression?

It is rational and equal to 3.

It is rational and equal to 4.

It is irrational and equal to 3 multiplied by the square root of 2.

It is irrational and equal to 4 multiplied by the square root of 2.

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Answers (1)
  1. 21 July, 09:32
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    It is irrational and equal to 4 multiplied by the square root of 2. Using the rules operating with surds: √ab = √a x √b
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