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Cel mai inteligent răspuns!
2014-10-14T15:06:19+03:00
10*x+(4*a+4*b)=10*x+4*(a+b)=10*5+4*13=50+52=102
(4*a+4*b-2*x)*(2*a+2*b+x)=[4*(a+b)-2*x]*[2*(a+b)+x]=(4*13-2*5)*(2*13+5)=(52-10)*(26+5)=42*31=1302
2 5 2
2014-10-14T15:13:56+03:00
A)10*5+4(a+b)=   b)4(a+b-10)*2(a+b+5)=4*3*2*18=24*18=432 Eu asa cred ca e...:)
50+4*13=
50+52=
102