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2014-07-22T09:34:02+03:00

a,b nu este egal cu 0 

a=1     b=2

N=1(1-1)+2*1*2+2(2-1)=1*0+4+2*1=0+4+3=6

a=2    b=1

N=2(2-1)+2*2*1+1(1-1)=2*1+4+1*0=2+4+0=6

3 5 3
2014-07-22T10:32:32+03:00
A+b=3
N=a(a-1)+2ab+b(b-1)=
=a²-a+2ab+b²-b=
a²+ab+b²
Stiim ca a+b=3
deci a²+b²=3²=9
N=a+b+a²+b²=9+3=12
2 4 2