We can compose the given assertion as

, which is a different of

In the event that

we get

which is a various of

Which is valid.

Think about

be valid for some certain number

is a different of

where

Presently let us demonstrate that

is valid.

Here

We can compose it as

By duplicating the terms

So we get

Subbing condition

By increase

On additional computation

Accepting

as normal

We get

is some regular number

is a numerous of

is valid at whatever point

is valid.

Hence, by the rule of numerical enlistment, articulation

is valid for all regular numbers for example