Question

What is the square root of two?

Answer 1

Decimal : 1.414213562
Standard: `sqrt2`
There is no whole figure to represent `sqrt2` so you would usually just write it as `sqrt2` for standard form however, if asked to answer in decimal place form you would write it as 1.414213562 or 1.4(1.d.p)

Answer 2

The square root of two is the number which when squared results in the value two.

That is `(sqrt(2))^2 = 2`

Actually it's slightly inaccurate to speak of the square root of two since it has two square roots.

`sqrt(2)` is the symbol we use for the positive square root of two.

`-sqrt(2)` is also a square root of two since `(-sqrt(2))^2 = 2`