Kayla R.

asked • 07/24/15# 6^2/2(3)+4=

## 4 Answers By Expert Tutors

^{2}/6 is 6 and adding 4 makes 10.

*This problem is a matter of interpretation of the math symbols in the written expression, so there will be differences.*

David W.

07/24/15

David W.

07/24/15

David W.

07/24/15

David W.

^{2. [7] }Newer TI calculators (TI 83 or later) also yield x

^{2}in all three cases.

07/24/15

David W.

“. . . 1/2x is equal to (1/2)x, and not 1/(2x) .. .”

Course of Theoretical Physics by Landau and Lifshitz and the Feynman Lectures on Physics. Wolfram Alpha changed in early 2013 to treat implied multiplication the same as explicit multiplication (formerly, implied multiplication without parentheses was assumed to bind more strongly than explicit multiplication). 2x/2x, 2*x/2*x, and 2(x)/2(x) now all yield x

^{2}.

^{[7]}Newer TI calculators (TI 83 or later) also yield x

^{2}in all three cases.

[7] "2x/2x, 2*x/2*x, 2(x)/2(x) - Wolfram|Alpha". Wolframalpha.com. Retrieved 11 February 2013

07/24/15

David W.

“. . . 1/2x is equal to (1/2)x, and not 1/(2x) .. .”

Course of Theoretical Physics by Landau and Lifshitz and the Feynman Lectures on Physics.[6]Wolfram Alpha changed in early 2013 to treat implied multiplication the same as explicit multiplication (formerly, implied multiplication without parentheses was assumed to bind more strongly than explicit multiplication). 2x/2x, 2*x/2*x, and 2(x)/2(x) now all yield x2.[7] Newer TI calculators (TI 83 or later) also yield x2 in all three cases.

[7] "2x/2x, 2*x/2*x, 2(x)/2(x) - Wolfram|Alpha". Wolframalpha.com. Retrieved 11 February 2013

07/24/15

David W.

“. . . 1/2x is equal to (1/2)x, and not 1/(2x) .. .”

Course of Theoretical Physics by Landau and Lifshitz and the Feynman Lectures on Physics.[6]Wolfram Alpha changed in early 2013 to treat implied multiplication the same as explicit multiplication (formerly, implied multiplication without parentheses was assumed to bind more strongly than explicit multiplication). 2x/2x, 2*x/2*x, and 2(x)/2(x) now all yield x2.[7] Newer TI calculators (TI 83 or later) also yield x2 in all three cases.

[7] "2x/2x, 2*x/2*x, 2(x)/2(x) - Wolfram|Alpha". Wolframalpha.com. Retrieved 11 February 2013

07/24/15

Harvey F.

**I am thinking this topic needs to be shifted to a forum discussion to involve more tutors without sending all of this to Kayla,the student.**

**I would suggest a title such as "Fun with PEMDAS".**

07/24/15

David W.

07/24/15

P-E-M-D-A-S (Please Excuse My Dear Aunt Sally) is the rule! And, if you do (3) first, you will get only 3.

Ah, now the rub (as Shakespeare would say):

Is the formula 6^2/(2*3) + 4 (then, why don't they write it correctly?)

or (6^2 /2 )* 3 + 4 ?

Do (P) first, so the formula is 6^2/ 2 * 3 + 4

Then (E), so 36 / 2 * 3 + 4

Then (M) or (D), left to right: 18 * 3 + 4

Then (M) 54 + 4

Then (A) 58

Note: P means do what is inside the parentheses first!

Special note: Harvey F. and I are having a discussion about whether parentheses constitute implicit multiplication at the high precedence level of parentheses rather that the lower precedence level of multiplication. Thus, PEMDAS and left-to-right rules are modified. Any expert knowledge is appreciated (but PLZ don't guess).

I found this on Wikipedia:

“. . . 1/2x is equal to (1/2)x, and not 1/(2x) .. .”

Course of Theoretical Physics by Landau and Lifshitz and the Feynman Lectures on Physics. Wofram Alpha changed in early 2013 to treat implied multiplication the same as explicit multiplication (formerly, implied multiplication without parentheses was assumed to bind more strongly than explicit multiplication). 2x/2x, 2*x/2*x, and 2(x)/2(x) now all yield x^{2}.^{[7]} Newer TI calculators (TI 83 or later) also yield x^{2} in all three cases.

[7] "2x/2x, 2*x/2*x, 2(x)/2(x) - Wolfram|Alpha". Wolframalpha.com. Retrieved 11 February 2013

Stephanie M. answered • 07/24/15

Private Tutor - English, Mathematics, and Study Skills

^{2}is above the fraction line and 2(3) is below the fraction line.

^{2+3}/

_{3+7}, you should evaluate the expression as though there were parentheses around the top and bottom:

*is*written like that, you should evaluate it using PEMDAS as normal, treating the / as division and the () as multiplication. Nothing complicated needs to happen in this case. Multiplication and division written like this happen just like normal multiplication and division:

^{2}÷ 2 × 3 + 4 = 58

Kayla R.

07/24/15

ROGER F. answered • 07/24/15

DR ROGER - TUTOR OF MATH, PHYSICS AND CHEMISTRY

^{2 }/6 + 4 = 10

*really*parentheses....

David W.

07/24/15

David W.

07/24/15

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Stephanie M.

07/24/15