it’s mean in that they intentionally wrote it to
Test who remembers the rules of Maths
The operational order is fucked
No it isn't.
the way I rewrote is
Wrong.
The only reason you’d write the equation like that is
Because it's written like that in Maths textbooks
there’s no reason to write it like that unless you’re
Obeying the rules of Maths, as found in Maths textbooks
No, it’s written poorly
No it isn't
drive engagement
The engagement comes from people not remembering the rules of Maths
(8-5)5
That's an invalid syntax. it's 5(8-5) or 5x(8-5), nothing else. Why is it invalid? Imagine (8-5)-5 - am I multiplying what's in the brackets by -5 (which gives -15), or subtracting 5 after doing the brackets (which gives -2)? Invalid syntax
Far easier for most people
Nope, it's wrong for everyone, due to being an invalid syntax.
Pemdas, parenthesis first, for a total of 3
Nope, a total of 15.
Then multiplication
There isn't any Multiplication, only Addition and Brackets (and Subtraction inside Brackets).
Definitely taught in parts of the US, it’s a regional thing though
It's a how good is your Maths teacher (who isn't required to have any Maths qualifications) question. The rules are the same everywhere.
In the US: I highly doubt it
The issue in the U.S. isn't Maths textbooks (same rules as everywhere else), it's poor teaching. U.S. Maths teachers aren't required to have any Maths qualifications, and they've been sliding in world rankings for more than a decade now.
ya this one is super unambiguously PEMDAS
Spoiler alert: they all are
the one that has more of an argument is the one with the division of whether a/b(c) is a / (b * c) or (a / b) * c
No it doesn't, The Distributive Law, a(b+c)=(ab+ac), thus a/b(c)=a/(bxc).
Arguably, there is no objective truth
Yes there is, just look in Maths textbooks
since the symbols and rules of mathematics are assigned arbitrarily
The signs are, the rules aren't.
are basically a social contract, just like language!
Nope and nope. It's a tool for calculating things, nothing like a language at all.
no objective meaning of “objective”
There is, in a dictionary, just like the rules of Maths are in Maths textbooks
I’m sorry but isn’t this elementary school math?
No, high school. The Distributive Law isn't taught until Year 7
2 + 5(8 - 5) = 2 + (5 × 8) + (5 × -5)
Nope. 2 + 5(8 - 5) = 2 + (5 × 8 - 5 ×5) . a(b+c)=(ab+ac)
Gotta distribute:
Yes, but...
2+(8+5)-(5+5)
You didn't. 2+5(8-5)=2+(5x8-5x5)
Which is exactly how it is written, for all those who remember the rules of Maths.