Comment

Comment on I dunno

<- View Parent

SmartmanApps@programming.dev ⁨2⁩ ⁨days⁩ ago

But factorised terms are multiplications,

No, they’re Distribution done in the Brackets step, a(b+c)=(ab+ac), now solve (ab+ac)

a(b+c) = a*(b+c)

Nope! a(b+c)=(ab+ac). 1/a(b+c)=1/(ab+ac), but 1/ax(b+c)=(b+c)/a.

23+25=16

(23+25) actually, or you’ll get the wrong answer when it follows a Division sign. See previous point

source

Sort:hotnew top

moriquende@lemmy.world ⁨2⁩ ⁨days⁩ ago

1/a(b+c)=1/(ab+ac)

Nope, that’s wrong. See www.wolframalpha.com/input?i=10%2F2(2%2B3) for reference.

source
- SmartmanApps@programming.dev ⁨2⁩ ⁨days⁩ ago
  
  Nope, that’s wrong
  
  You think Maths textbooks are wrong?? 😂
  
  Image
  
  Image
  
  See www.wolframalpha.com/input?i=10%2F2(2%2B3) for reference
  
  See Maths textbooks for reference 😂
  
  source
  - moriquende@lemmy.world ⁨1⁩ ⁨day⁩ ago
    Yes, the math textbook says exactly what I said, that it’s a multiplication. There’s no mention of it being a separate operation taking precedence. The parentheses in your example are added for clarity.
    
    source
    SmartmanApps@programming.dev ⁨1⁩ ⁨day⁩ ago
    
    Yes, the math textbook says exactly what I said, that it’s a multiplication
    
    Nope, they say it’s Brackets…
    
    5(36)=(5x36) <== Brackets
    
    bc=(3x4) <== Brackets
    
    There’s no mention of it being a separate operation taking precedence
    
    It’s part of the Brackets step. I have no idea what “separate operation” you’re talking about
    
    The parentheses in your example are added for clarity
    
    Nope. They are there because The Distributive Law requires them. “those who study algebra are required to make their calculations conform to these laws”.
    
    Whether you give priority to juxtapositions is a
    
    A literal Law of Maths. See textbook.
    
    the consensus being to just use parenthesis around when writing in a single line to avoid confusion.
    
    No it isn’t. You won’t find any Maths textbook that says that.
    
    However, there is no distribution step taking precedence
    
    There is the Brackets step, including Distribution, taking precedence, as per Maths textbooks 🙄
    
    as you mentioned
    
    As the textbooks mention
    
    the whole debate centers around whether the writer was too lazy to add parenthesis
    
    The only debate is by people like you ignoring what is taught in Maths textbooks.
    
    source
    -> View More Comments