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2006-07-22 23:09:56 · 4 answers · asked by Anonymous in Education & Reference Homework Help

The question is x^3+y^3-12xy+64,When x+y=4.can you pls show the steps also?

2006-07-22 23:44:18 · update #1

4 answers

Solve for either X or Y with both equations, and then equal the two equations to each other.

Hope this helps!!

2006-07-22 23:15:34 · answer #1 · answered by powersbt 6 · 0 0

Life is like some number let us say: 3/4
to multiply 3/4 by 5 it become 15/4. it means that the worldly glory makes people worthy.
Another way to become worthy is to make 3/2 out of 3/4 and then to make 3/1 then 3/0.5 and then 3/0.00005. In such way enormous big number appear.
If we go further, the number 10000000/0.000000001 is also enormous number.
Advice: when you attain worldly glory and you strive to erase your ego, you became person of great worth.
Why we have been teached that we cannot have such number:4/0 ? Because if somebody completely delete his or her ego, he or she will become Buddha with greatest power in the universe. It has been keep hidden from you all the time!

2006-07-22 23:21:06 · answer #2 · answered by Anonymous · 0 0

x^3+y^3-12xy+64 x+y=4 therefore x=4-y
,substituting
(4-y)^3+y^3-12(4-y)y+64
=64-y3-12y(4-y)+y^3-12(4-y)y+64
=128-24y(4-y).putting y=4-x
we will get128-24x(4-x)
so we can say by comparing x=y=2
and substituting we get
x^3+y^-12xy+64=0

2006-07-24 21:04:26 · answer #3 · answered by rumradrek 2 · 0 0

this is in tih form of a cube +b cube+c cube-3abc=(a+b+C) (a^2+b^2+c^2-ab-bc-ca)
here a=x,b=y,c=4
assuming that u typed the question wrongly as x+y=4 when it should come as -4 , we substitute the value of x,y,z in the right hand side of the identity
(x+y+4) (x^2+y^2+16-xy-4y-4z)
sub x+y=-4,we get 0(x^2+y^2+16-xy-4y-4x) which is 0

2006-07-22 23:33:53 · answer #4 · answered by the gifted child 2 · 0 0

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