Replies to this discussion thread
 5 replies |
Author |
Time |
Post |
 8¿2(2+2) ? (Original post) |
def_con5 |
Aug 1 |
OP |
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Cold Warrior |
Aug 1 |
#1 |
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fools_gold |
Aug 1 |
#2 |
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Cold Warrior |
Aug 1 |
#3 |
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fools_gold |
Aug 1 |
#4 |
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rampartb |
Aug 1 |
#5 |
Response to Cold Warrior (Reply #3)
Thu Aug 1, 2019, 01:34 PM
fools_gold (7,353 posts)
4. two times the separate operation of two plus two, or 8.
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In my 50+ years of engineering mathematical notations, before we had easily available subscripts and superscripts, we would use the ^ "carot" figure, or sometimes (e) or (*), such as
2^(2+2) or
2(*)(2+2) or
2 (e) (2+2)
A number abutted right up to another operation is always a straight multiplication.
That's the way we have always done it.
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Response to Cold Warrior (Reply #3)
Thu Aug 1, 2019, 02:05 PM
rampartb (17,799 posts)
5. distributive property
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add the internal 2s then multiply by 2.
I know that the parentheses is in the denominator and i'm sure that any machine running fortran or basic would solve this :
8 / 2(2+2) = 8 / 2(4) = 8/ 8 = 1
but I can't put my finger on a rule. pedmas does indeed return a 16, but I think that might require an explicit * rather than that distributive property.
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