Yes, of course, I do know that. It's not what I meant.
Suppose we expand that first example. I would write: 3(x + 5) = 3x + 3⋅5 The notation I'm talking about writes: 3(x + 5) = 3x + 3(5)
It's that 3(5) instead of 3⋅5 I'm talking about.
Suppose we expand that first example. I would write: 3(x + 5) = 3x + 3⋅5 The notation I'm talking about writes: 3(x + 5) = 3x + 3(5)
It's that 3(5) instead of 3⋅5 I'm talking about.