Why research and development in maintenance engineering?

The research and development plays an important role in the maintenance engineering is that it basically improve the equipment maintainability and reliability.

According to the requirement, the system and the equipment needs to be maintain in the  maintenance engineering.

The research and the development basically provide the products and services and also improve the existing products and services of the system in the maintenance engineering.

x+2 because it just doubles hon so the pattern can actually tell you the expression.

so for example,

if x=2 then 2+2 is 4

if x=4 then 4+4 is 8

and so on and so forth.

i really hope that this makes sense and you out in a way hon: )

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