Question

An expression is shown below:

Answer 1

Answer:

$\sqrt{18}+\sqrt{2}\text{ is irrational and equal to }4\sqrt2$

Step-by-step explanation:

Given the expression

$\sqrt{18}+\sqrt{2}$

we have to choose the true expression

$\sqrt{18}+\sqrt{2}=\sqrt{9\times 2}+\sqrt{2}$

$=3\sqrt2+\sqrt2$

$=4\sqrt2$

$\text{As }\sqrt2\text{ is irrational implies that }\sqrt{18}+\sqrt{2}\text{ is irrational and equal to }4\sqrt2$

Last option is correct

Answer 2

It is irrational and is = to 4√2