Algebra Parenthesis, Brackets, and Braces.

[Agent11]

(2+6^2) -5^2 +4 {3(9-2) -5[6-2(21-19)]}

The way I understand this, all parenthesis, brackets, and braces share priority, however you are supposed to start inside and work your way out.

So. . .

(38) -5^2 +4 {3(7) -5 [6-2(2)]}

to

(38) -5^2 +4 {3(7) -[10]}

to

(38) -5^2 +4 {11}

to

13 + 44

Which would make the answer 57.

Thanks for all the help every body, I now know slightly more about algebra.

 

[TuxDave]

(38) -5^2 +4 {3(7) -5 [6-2(2)]}

to

(38) -5^2 +4 {3(7) -5 [4(2)]}

Check the bolded.

(2+6^2) -5^2 +4 {3(9-2) -5[6-2(21-9)]}

to

(38) -5^2 +4 {3(7) -5 [6-2(2)]}

Here too.

 

[Agent11]

Aha Good catch. I'm terrible at math. That was supposed to be a 19, instead of a 9, so the 2 is correct(im pretty sure at least). Such typos do not inspire much confidence.

Was your point on the one with the 4(2) that I should have completed the entire bracket problem then? Does this look better? (38) -5^2 +4 {3(7) -5 [8]} wouldn't change the outcome of the problem though. . . At least the way I'm doing it. I tried to clean things up though.

Anything else stand out to you?

Thanks for the tips

 

[Z15CAM]

You can't loose me in Algebra but Calculus Express's Freedom.

Algebra is confined where as Calculus is a Language and predicts Probability.

 

[Wall Street]

Was your point on the one with the 4(2) that I should have completed the entire bracket problem then? Does this look better? (38) -5^2 +4 {3(7) -5 [8]} wouldn't change the outcome of the problem though. . .

No. The point is that multiplication comes before subtraction. So you do 2 x 2 = 4, then you do 6 - 4 = 2, and finally 5 x 2 = 10. This will change the outcome of the problem.

 

[Agent11]

Thanks, good catch! I was completely distracted by the parentheses. Look better now?

 

[jaedaliu]

(38) -5^2 +4 {11}

to

17{11}

Which would make the answer 187.


Is this correct? Algebra has never been my strong point.

not seeing how you got from A to B.

I see it as 38 - 5*5 + 4*11
38-25+44
57

 

[LucJoe]

not seeing how you got from A to B.

I see it as 38 - 5*5 + 4*11
38-25+44
57

confirmed.

and here is where you went wrong:

(38) -5^2 +4 {11}

to

17{11}

should be

(38) -5^2 +4 {11}

to

38 - 25 + 44

 

[Agent11]

Ah... I keep trying to solve the problem in a linear fashion. Going to have to watch out for that.

Thanks!

Was in a bit of a hurry and left it saying something very wrong at the end there, transcription error D:

I'm taking 16 credits and it's got me a bit frazzled. Hopefully things will settle into a rhythm soon, as it is I hardly have time to argue on P&N.

 

[Fayd]

failed to specify if it's (-5)^2 or -(5)^2

 

[Paul98]

unless there are brackets around - 5 it means it's -(5^2)