Mathematics Expression. HELP PLEASE

Hi, can you please tell me how do i write this mathematic expression (see Expression.jpg) on WordRider? Reply as soon as possible PLEASE

Thanking you in advance

(WorkRider is the best)

Hi Djams,

> Hi, can you please tell me how do i write this
> mathematic expression (see Expression.jpg) on
> WordRider? Reply as soon as possible PLEASE
>


Enjoy .

>
> (WorkRider is the best)
Would you be willing to pay for the best tool?

-Vity

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THX a lot