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Exercitiile 1 si 3 va rog

Exercitiile 1 Si 3 Va Rog class=

Răspuns :

ex nr 3
a)1|5×x²=5|49⇒x²|5=5|49⇒49x²=25⇒49x²-25=0

b)x-1|2-x+1|3=5|6⇒
3x-3-2x+2|6=5|6⇒
x-1|6=5|6⇒
6(x-1)=30⇒6x-6=30⇒6x=30+6⇒6x=36⇒x=36|6⇒x=6
succes