Question

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

Answer 1

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.

Answer 2

Answer:

I think it is D

Step-by-step explanation: