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16 · 2 · 1/2 = 16, (16 - 1) · 2 = 30, 20 - 30 = -10.

40 · 10 · 1/2 = 400/2 = 200.

Congratulations on the video! I'm from Brazil and your class crossed the ocean. Very good class 👏🏻👏🏻👏🏻

The reason I don't believe in BODMAS sometimes

Here we agree. But if you apply what you did in the other video (wrong) to this: 20 - 15 x 2 You would (again, it's wrong) do: (20 - 15) x 2 5 x 2 10 Now do you understand why your "A Nice Exponential Math Problem Many Will Fail" video is wrong? It's the same case: a - b x c and you solved them in 2 ways. Here you were right ( a - (b x c)), there you were wrong ( (a - b) x c)

This can be simplified as 60 - 20 x 8 x 2 Applying PEMDAS, you have a wall there in the minus sign you cannot break 60 - [ 20 x 8 x 2 ] First solve the multiplications 60 - 320 And only now the substraction -260

Wrong! The answer is -260. Your big mistake is the first thing you say: 00:57, you say, 60 -20 is 40. No. The last letter of PEMDAS, that "S" is for substraction. It's the last thing to do. First you have the "M" for multiplication.

This is perhaps one of the more idiotic conventions in usage, but it is unfortunately a well established convention. It is assumed, entirely unintuitively, that a negative in front of the number raised to a power applies to an implied coeffiecient of -1, rather than the number itself. Or put another way, numbers raised to powers are taken to be positive unless they are placed in parentheses. For example, -5² is taken to mean -1⋅5². Yes, that is a positive 5! There is no mathematical justification for this. It just has to be accepted and remembered. The good news is that this, like all the PEMDAS/BODMAS nonsense, is just a contrivance that school students have to commit to memory to keep their pedantic teachers happy. You will never need to know this once you are doing real mathematics.

on the 2nd problem, where did the brackets go? 45 / (3²*1) = 45 / (9*1) = 45 /(9) = 5

If Pemdas was used, it would be, 2+3x6/3= 2+18/3= 2+6= 8 this is why PEMDAS and BODMAS are stupid, BODMAS should be retired altogether.

What😮?? No! You can't do 60-20=40. Substraction should be the last thing to do. Until that point method 2 was right. 60 - (20 (16 - 8) x 2) 60 - (20 x 8 x 2) 60 - (20 x 16) 60 - 320 And only now you can sustract The answer is -260

Playing by PEMDAS rules, up to the last line in 60-20 (16-8)x2 is right. Now you are left with 2 multiplication operations on the right and left side of the parenthesis. So solving the (16-8), we get 60-20(8) ×2 ↑. ↑ Division and Multiplication order can be switched as much as is Addition and Subtraction also but DM must go first before AS. If there are two multiplication, we start at left and so goes -20(8) = -160 Now we got 60 -160×2 60-320 then -260. It can be checked with calculator

-260

X=2 because 5x5 is 25 and 25+25 is 50

the answer is 23 but if you show your work you will be wrong. There is no addition sign in that problem. it would be 27-2=25 and then 25-2=23

This is truly ridiculous. We are applying an elementary school mnemonic to further mathematics. First, no one uses the obelus (division sign) after elementary school, except pedantic elementary school teachers, and secondly, the vast majority of technical professionals (mathematicians, scientists, engineers, ...) would interpret this to mean 9 "over" 3(2+1), which would equal 1. If we apply this nonsense at university level, we will simply be wrong with respect to the intended communication. The thing to consider is that mathematical expressions come from somewhere. Why would we ever write a 9÷3(2+1) if we mean ⁹/₃(2+1)?? We wouldn't and we don't. PEMDAS and its equivalents (PIMDAS, BODMAS, ...) are NOT universally accepted conventions. They are obsessed over in US schools, but the rest of the world looks at real-world conventions and usage. medium.com/age-of-awareness/beyond-pemdas-making-sense-of-the-arithmetic-order-of-operations-32b2ccadb175

-4

4^x+4^x=16 2*4^x=16 4^x=16÷2 4^x=8 4=2^2 (2^2)^x=2^3 2^2x=2^3 buradan da 2x=3 x=3/2 x=1,5 Təşəkkürlər.

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Nice sir ji 🎉🎉🎉🎉🎉

Answer is 1

( 2^5 )^2 = 2.5×2 = 2^10 = 1024 is correct Answer

26 + 2(6 - 1) · 2 = 26 + 10 · 2 = 26 + 20 = 46.

Thanks for this have learnt something I didn't know

Step 1: Express in logarithmic form Take the natural logarithm (or log base 10) on both sides: log⁡(4x)=log⁡(72)\log(4^x) = \log(72)log(4x)=log(72) Using the logarithmic property log⁡(ab)=blog⁡(a)\log(a^b) = b\log(a)log(ab)=blog(a), we get: x⋅log⁡(4)=log⁡(72)x \cdot \log(4) = \log(72)x⋅log(4)=log(72)

Keep it up

3 · 2 · 1/2 = 3, -3 + 3 = 0, 0 + 40 = 40.

A simple problem in Tricks of Trade branch of Cheatamatics. X owns a company and deducts advertisement expense to 'cheat' Income-tax. The advertising channel is owned by Y. Find the relation between X and Y.

Your maths videos has been a lifesaver to me. Keep it up.

Thanks for your explanation

Never learned pemdas in high school. Returned to college many years later. They expected I knew pemdas. I dropped class then taught myself. Many years later, I like knowing I can do many of these without pencil and paper. Thank you.

Bodmas rule 6-4 = 2 , divide , multiply and add, subtract

Option B is correct Answer 2

çıtır çerez

35 please

30

21😊

Melhore os números!😊

6 · 1/2 · 4 = 12, 10 + (-12) + (-4) = -6.

64^x = 2^6x, 4^3x=2^6x; 2 · 2^6x = 2^7x = 128 = 2^7, 7x = 7, x = 1.

Melhorar a vídeo!😊

35

Bodmas rule 8×2-6÷2+4 = 8×2 - 6/2+4 = 8×2 - 3+4 = 16+4-3 = 20 - 3 = 17 is correct Answer

46 😊

8 please

I mean... I get 2 in my head without even doing any algebraic manipulations... Is it really from the Olympiad?

23 please

16 please

Skip a bit, Apu!

0