3√15 - 16/√2 + 50

= 3√15 - 2(4√2 + 25)

= 50.30524153963...

Phones and even calculators very rarely follow bodmas. They tend to calculate as they go, or do a kind of half bodmas that groups multiplication and division but otherwise calculates as it goes. It isn't helped by the way that we generally enter √2 etc. as [2] [√].

You go with the green one.

You could've at least provided the things you got so we could tell you what went wrong, yes... no?

Do you want to simplify or get a decimal value?

The only thing you could do to make it prettier is take 16 / √2 = 16√2 / (√2√2) = 16√2 / 2 = 8√2

And the evaluation is 50.30524153963749026512428640567....... to a decimal