notam cu x si y cele doua numere
x²-y²=208
(x-y)(x+y)=208 dar mai stim ca x-y=8
8(x+y)=208
x+y=208:8
x+y=26
[tex] \left \{ {{x+y=26} \atop {x-y=8}} \right. [/tex] adunam ambele ecuatii si rezulta
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2x=34
x=34:2
x=17
y=26-17
y=9
