(+2)+(-12) is - Vidyadip

MCQ

$ (+\sqrt{2})+(-1\sqrt{2})$ is

A
a non $-$ terminating decimal
B
none of these
C
an irrational number
✓
a rational number

✓

Answer

Correct option: D.

a rational number

$(1+\sqrt{2})+(1-\sqrt{2)}$
$=1+\sqrt{2}+1-\sqrt{2}$
$=1+1=2$ and $2$ is a rational number.
Therefore the given number is rational number.

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