Question: depending on the calculator I get different answers. If I try 1+2*3... both calculators give me the correct answer of 7, thus meaning according to websites, they follow the order of operations.
However this problem... 2(8) -:- 4(2).... gives me two different answers. The graphing calculator that can recognize paretheses as multiplication give me an answer of 2.... 2(8) = 16... 4(2) = 8... then divides. But this appears out of order? I can type it how I see it... 2(8) -:- 4(2) Is there some unwritten rule like when typing in negative numbers raised to a power in a graphung calculator... that you MUST use parentheses... -9^2 = -81... thus you have to type (-9)^2 to get a correct answer of 81
The other older non graphing calculator works the problem... 2(8) = 16 then divides 4 = 4 then multiplies 2 = 8. But I have to type it "2 x 8 -:- 4 x 2 ="
Order of operations seems to work. Is the graphing calculator wrong? Should I type it in differently? Or is it correct and I'm doing the order of operations incorrectly?
Please assist.
P.S. I am using -:- as division because the divide is not the bar or forward slash in the original problem... it's the line, two dot division.
However this problem... 2(8) -:- 4(2).... gives me two different answers. The graphing calculator that can recognize paretheses as multiplication give me an answer of 2.... 2(8) = 16... 4(2) = 8... then divides. But this appears out of order? I can type it how I see it... 2(8) -:- 4(2) Is there some unwritten rule like when typing in negative numbers raised to a power in a graphung calculator... that you MUST use parentheses... -9^2 = -81... thus you have to type (-9)^2 to get a correct answer of 81
The other older non graphing calculator works the problem... 2(8) = 16 then divides 4 = 4 then multiplies 2 = 8. But I have to type it "2 x 8 -:- 4 x 2 ="
Order of operations seems to work. Is the graphing calculator wrong? Should I type it in differently? Or is it correct and I'm doing the order of operations incorrectly?
Please assist.
P.S. I am using -:- as division because the divide is not the bar or forward slash in the original problem... it's the line, two dot division.