Question

I'm not sure how Δx works when it's being multiplied. Can anyone explain?

Ex. (x+Δx) (x+Δx)= ???

What does x(Δx)=?
Would it be Δx^2
But then.. what does Δx(Δx)=?

Answer 1

it's just about notation......that's all...
think of \(\large \Delta x \)=h so all you have is (x+h)(x+h). you can do foil on that...
but as far as notation, \(\large x(\Delta x) \ne \Delta x^2 \)
but rather this is the case: \(\large \Delta x^2 =\Delta x \cdot \Delta x \)
so, \(\large x(\Delta x) \) is just \(\large x(\Delta x) \) or simply \(\large x \Delta x \)