Princecalm:
Use it to challenge your lecturer and see what comes out at the end of the semester.

stephenduru:
He got it right bro.He used difference of two squares.In mathes a^2-b^2=(a-b)(a+b).Do u grab?

xreal:


mathematically, the expansion is right.

MrOlai:


The calculation is 100% mathematically correct. All the steps are correct. Kudos to the mathematician!

However, in Mathematics, 0/0 is considered undefined. In fact, 0/0 could be proved be equal to several numbers, just like the mathematician proved that 0/0 = 2.

Once again, kudos to the mathematician!

For those of you condemning the mathematician, you need to go back to school!

lofty900:
mathematically correct, scientifically wrong

ikenigel:
The proof was almost correct until he cancelled out cancelled out (10-10)/(10-10) as "1". This cannot be so. 0/0 is NOT EQUAL to 1. So it cannot be cancelled out like that. (a-a)/(a-a) is always equal to zero! That's the point where he lost it. Other things are based on sound mathematics. But (10-10)/(10-10) is NEVER equal to ONE.
The rule is for any random numbers 'a' and 'b', (a-b)/(a-b) = 1 .... EXCEPT when a=b

Jumbledwords:
He goofed with the resulting brackets

Jumbledwords:
He goofed with the resulting brackets

ikwoche:


I prefer TWACI. Her advert has effizy. It appears and disappears like willy willy

Acekidc4:


We are talking Maths here, you are talking Voting!! Are you Nut Ni

Pick Race and Vamouse Comot for Here!!

Ancientx:

calm down. for difference of two sqaures to be used A must not be equal to B..
sorry bro hes wrong.

Purereal:
-10*-10=100
-10*-10=100

ikenigel:
The proof was almost correct until he cancelled out cancelled out (10-10)/(10-10) as "1". This cannot be so. 0/0 is NOT EQUAL to 1. So it cannot be cancelled out like that. (a-a)/(a-a) is always equal to zero! That's the point where he lost it. Other things are based on sound mathematics. But (10-10)/(10-10) is NEVER equal to ONE.
The rule is for any random numbers 'a' and 'b', (a-b)/(a-b) = 1 .... EXCEPT when a=b

doncharleyosumo:


I think this is a mathematical proof that something can come out of nothing, thus the Big Bang!

jstriker442:
my FRIEND this is very mathematically wrong buh i can say its logically correct. Maths tells us to use BODMAS in all we do under maths. Do u knw y i love maths ?? Becos it never lies. Follow the rules and any question must give thesame answer. Pls use BODMAS

Mizzzbeee:
(10+10) (10-10) following his method that shud be (20) (0) which means 20×0 which is 0 so my dear your wuru wuru to d answer no b here

fuchong:
He did not cancel 10 with - 10. But (10-10)/(10-10).it really make sense. All my years of teaching mathematics I have never reason it this way

cupid1:
He started failing it from the point where he struck out 10 and -10,the 10 on top is supposed to equate to -1 when divided by -1 which when put into the equation, will give you 19/10.
And secondly, you cant stricke out numbers that way. They are in brackets in their own different equations i.e an equation in an equation.
So my point is, the person who provided this so called 'proof' is a dullard

emekachimek:
Referring to the numerator, -10 x 10 is not equal to -10^2 as written by the Mathematician. Instead, -10 x 10 = -100 while -10^2 = +100. The numerator says 100-100 not 100+100. Therefore the so called Mathematician is so wrong that he needs to get this off before small children see it and get confused

MrOlai:


Says who?

Mr man, go back to school! The person is indeed a great mathematician. He is 100% correct!

guyX:

you failed at the second to last step.
BODMAS
BRACKET OFF DIVISION MULTIPLICATION ADDITION SUBTRACTION.
You divided before removing the bracket.
you are trying to prove it wrong, but got proved wrong.

ILIDEFI:


You're the one getting it wrong. There is a difference between -10^2 and (-10)^2. The former equals —100 while the latter equals +100. Op was referring to the former. He is still correct mathematically.

emekachimek:


The guy has succeeded in deceiving u too. -b^2 means -b x -b which will always give u a positive value. He ignored the sign before the 100 which is never done

teemy:


http://en.wikipedia.org/wiki/Difference_of_two_squares
http://www.themathpage.com/alg/difference-two-squares.htm

I am always willing to learn new things but my simple research did not agree with the bolded as there is no excemption. In mathematic, a can be equal to b


But finally I have to admit that every point the denominator ends in a subtraction that equals zero the whole thing ends as undefined making the cookie crumble. So theorem fallacied.

cupid1:
my man, you cannot jump out of thin air and claim my hypothesis is incorrect without providing another to take it's place. Or are you claiming that the solution in the OP is correct, if so, then u're another dullard

brytandre:



You need to take back ur words cos it's very correct and true!

Any number/0 is undefined

Undefined in the sense that it can be manipulated to produce any number (from negative infinity to positive infinity)


So I guess he has a point......but he "unknowingly" proved the fact of the undefined nature of a denominator zero.


To further prove that; you can replace all the 100 by another number with a perfect square..(4,9,16,25,36.............). I would say it is mathematically interesting cos if looked into can emit some interesting corollary


N.B: I'm a graduate of Mathematical Sciences (Statistics) so I know what I'm saying. Bless u

einsteino:


he is so correct! i was shocked at his proof. i have cross checked it, he is damn so right