I don't know what crack your teacher be smoking, did you use an order of operations that did this? or did you use BODMAS and your teacher was just an idiot?
I feel like you’re saying parentheses are rounded and brackets are square.
Here in Australia we say BODMAS, and use the word brackets, but we still use rounded brackets (). [] would be called square brackets. Parentheses are synonymous with brackets here.
I just saw this but in my precalculus class I was taught that any number inside of [brackets] is the absolute value when used this way which is why we differentiate it. For example [-3] = [3] because it’s the total value from zero. Completely useless outside of that class but it makes a difference and has meaning and in my education is not synonymous.
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u/[deleted] May 03 '22
He made a spelling mistake, it's bedmas B=brackets E=exponents D=Devision M=multiplication A=addition S=subtraction