- #1
mercury
the following two questions are in math..and i have no clue how to even start..
i got them in a test..
i would appreciate it if u could tell me what i should do , or what concept is involved...
1) if a,b,c belong to the set of all real no.s and a!=b(not equal to)
then
a)a^2+b^2+ab=3c^2 for some c in (a,b)
b)a^2+b^2+ab=3c^2 for not even one c in (a,b)
c)a^2+b^2-ab=3c^2 for some c in (a,b)
2)the no. of non-negative integral solutions for the eqn.
2x+y+z=20 are
a)132
b)121
c)144
d)none of the above
thanks in advance
i got them in a test..
i would appreciate it if u could tell me what i should do , or what concept is involved...
1) if a,b,c belong to the set of all real no.s and a!=b(not equal to)
then
a)a^2+b^2+ab=3c^2 for some c in (a,b)
b)a^2+b^2+ab=3c^2 for not even one c in (a,b)
c)a^2+b^2-ab=3c^2 for some c in (a,b)
2)the no. of non-negative integral solutions for the eqn.
2x+y+z=20 are
a)132
b)121
c)144
d)none of the above
thanks in advance