Comment on A fake Facebook event disguised as a math problem has been one of its top posts for 6 months
kameecoding@lemmy.world 10 months agoFor me it’s the arguments when there is a parentheses but no operator in these baits e.g. 2(4 - 2)
If you don’t know operator orders I have given up long ago, but I have seen a few lengthy discussions about this
Oh yeah, that’s a fun one.
Where I live, this would be considered juxtaposition, at least by uni professors and scientific community, so 2(4-2) isn’t the same as 2×(4-2).
This way, equations such as 15/2(4-2) end up with a definite solution.
Usually, however, it is obvious even without assuming juxtaposition because you can look at previous operations. Not to mention that it’s most common with variables (Eg. “2x/3y”).
So,
15/2(4-2) = 3.75
While
15/2×(4-2) = 15
Where I live, this would be considered juxtaposition
Not just where you live, everywhere, in Maths textbooks. Adults forgetting the rules (and unqualified U.S. teachers not teaching what’s in the textbooks) is another matter altogether.
SmartmanApps@programming.dev 9 months ago
No, it’s known as Factorised Terms/Products, solved via The Distributive Law, a(b+c)=(ab+ac). “implied multiplication” is a made up rule by people who have forgotten the actual rules, and often they get it wrong (because, having wrongly called it “multiplication”, they then wrongly give it the precedence of multiplication, not brackets).