Question

What is the difference between

$- \sqrt{2}$
And
$\sqrt{ - 2}$
No spams please!! ​

Answer 1

Answer:

minus of square root of two is a real number. Whereas, squareroot of minus two is an imaginary number.

Step-by-step explanation:

$\sqrt{ - 2}$

can be expressed as

$\sqrt{ - 1 \times 2 }$

that is,

$i \times \sqrt{2}$

where, i takes the value of square root of minus one