Question

Y^2 = X^3 - 432
12^2 = 36^3 - 432 is?

Answer 1

If you guessed those for x and y, you may want to try again.

Answer 2

Explain, I guessed, correct. But im confused on how to even go about solving it. Y^2 = X^3 - 432.

Answer 3

But, Y^2 is 144 ( with Y = 12 ) 432 - 144 = ?, ? would equal X^3?

Answer 4

432-144 = 288
12^2+144=24^2

Answer 5

Your saying that 24^2 Is X^3? Wouldnt that be making the power incorrect?

Answer 6

do u need to find X ?

Answer 7

You want to find Y^2, Y^2 = X^3 - 432. So, yes. Forget about Y^2, once we find X^3 we will have Y^2.

Answer 8

aren't u given anything else ?

Answer 9

No, I was not. Just Y^2 = X^3 - 432. But assuming Y = 12. 12^2 = 144. 144- 432 = 288. What to the power of 3 equals 288? :/

Answer 10

nothing actually...so your assumption that y=12 is not correct

Answer 11

ok... so we need to find a new Y^2... What can be powered by 3 and still be under 432, and whats left over still be powered by 2?

Answer 12

12^3-432 = 1296
sqrt{1296} = 36
Y=12
X=36

Answer 13

I dont understand your thoughts. Explain,

Answer 14

sorry, X=12
Y=36

Answer 15

i tried different values of X, from 7 onwards, when i reached 12,
1728-432 = 1296
which was perfect square

Answer 16

So your saying I had it backwards earlier? ^^^ So, How would that be put into equation? Y^2 = X^3 - 432.
12^3 - 432 = 1296
SR - ( 1296 ) = 36
X= 12
Y= 36. Thats it? Thats the answer?

Answer 17

yup...

Answer 18

Whered you get 12 from?