The natural shockwave

If a, b and c are three natural numbers , which of the following can never be true ?

a^2+b^2=c^3 a^3+b^3=c^3 a^3+b^3=c^2 a^2-b^2=c^2

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

2 solutions

Krishna Ar
Jun 9, 2014

Fermat's last theorem states that no a,b,c can satisfy a n + b n = c n a^{n} + b^{n}= c^{n} for n > 2 n>2

Sorry, I didn't get it. I mean in a right angled triangle,a^2 +b^2=c^2

Varenya Srivastava - 7 years ago

Log in to reply

N not greater than 2 is satisfied. N greater than 2 not satisified. Please upvote my solution :)

Krishna Ar - 7 years ago

Log in to reply

ah sorry !! I think I didn't note the entire thing...So here's an upvote:)

Varenya Srivastava - 7 years ago

Log in to reply

@Varenya Srivastava You should upvote the solution!!!! Not the comment please

Krishna Ar - 7 years ago

Log in to reply

@Krishna Ar Ya, actually, I could not see the option 'upvote' under your solution.....I don't know much about brilliant...kinda new:) Now I have found it..

Varenya Srivastava - 7 years ago

Log in to reply

@Varenya Srivastava :) ...... ......

Krishna Ar - 7 years ago

What if a=b=c=1 ? They all are natural numbers and satisfy the option. Can you give me a triplet which satisfies a^2-b^2=c^2 where a,b, c are natural numbers. For me this is the answer.

Kushagra Sahni - 7 years ago

Log in to reply

@Kushagra Sahni 25-9=16.....In a right angled triangle...always hyp^2-side^2=3rd side's square

Varenya Srivastava - 7 years ago

Log in to reply

@Varenya Srivastava NO NO MAN. I AM NOT ASKING FOR THAT. THIS THING CAME TO MY FIND EARLIER ALSO. I AM ASKING WHAT IF A=B=C=1, THEN A^3+B^3=C^3, AND THEY ARE ALL NATURAL. SO HOW CAN THIS ANS. BE TRUE ?????

Kushagra Sahni - 7 years ago

Log in to reply

@Kushagra Sahni Sorry, but i don't understand you. 1^3 +1^3=2 ,, not 1^3

Varenya Srivastava - 6 years, 12 months ago

Log in to reply

@Varenya Srivastava Ok sorry. I didn't read it carefully

Kushagra Sahni - 6 years, 12 months ago

Log in to reply

@Kushagra Sahni :)..................

Varenya Srivastava - 6 years, 12 months ago

OH SORRY SORRY, I UNDERSTOOD WHY THIS CAN'T BE THE ANSWER. BUT AT LEAST TELL ME WHAT IF A=B=C=1 ?

Kushagra Sahni - 7 years ago
Laura Gao
Mar 5, 2018

Proof by exhausion

a 2 b 2 = c 2 a^2-b^2=c^2 there is 5 2 4 2 = 3 2 5^2-4^2=3^2

a 3 + b 3 = c 2 a^3+b^3=c^2 there is 1 3 + 2 3 = 3 2 1^3+2^3=3^2

a 2 + b 2 = c 3 a^2+b^2=c^3 there is 2 2 + 2 2 = 2 3 2^2+2^2=2^3

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...