Răspuns :
3-2x=+-√25=+-5
3-2x=5
-2=2x
x=-1
3-2x=-5
-2x=-8
x=4
S={-1;4}
verificare (3+2)²=5²=25 adevarat
(3-8)²=(-5)²=25 adevarat
3-2x=5
-2=2x
x=-1
3-2x=-5
-2x=-8
x=4
S={-1;4}
verificare (3+2)²=5²=25 adevarat
(3-8)²=(-5)²=25 adevarat