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Taya2010 [7]
3 years ago
6

An expression is shown below: square root of 18 plus square root of 2 Which statement is true about the expression? URGENT

Mathematics
2 answers:
goldenfox [79]3 years ago
3 0

Answer:

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

Therefore, option d is true.

Step-by-step explanation:

As the expression is

'square root of 18 plus square root of 2'.

i.e. \sqrt{18}+\sqrt{2}

Lets solve the expression

\sqrt{18}+\sqrt{2}

=3\sqrt{2}+\sqrt{2}         ∵ \sqrt{18}=3\sqrt{2}

\mathrm{Add\:similar\:elements:}\:3\sqrt{2}+\sqrt{2}=4\sqrt{2}

=4\sqrt{2}  

or

=5.65685\dots   (in decimal place)

  • 5.65685 indicates that it is irrational and can not be written in the form p/q

Thus, it is irrational and equal to 4 multiplied by the square root of 2.

Therefore, option d is true.

kupik [55]3 years ago
3 0

Answer:

I think it is D

Step-by-step explanation:

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