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Dragomirandreea
a fost răspuns

1.Rezolvati in Z ecuatiile:a)8x+3=5x-12;
b)23x²-9=16-2x²;
c)3x-xy=11.
2.Rezolvati in Z ecuatiile:a)||x-3|-2|=1
b)|3x+1|+|3y-1|=3
c)|x-2|+(x-y)²=0;
d)(x²-1)²+(x-1)²=0

Răspuns :

Yonelapapusica
1.a)8x+3=5x-12
8x-5x=-12-3
3x=-15
x=-5
b)[tex]23 x^{2} +2 x^{2} =16+9[/tex]
[tex]25 x^{2} =25[/tex]
x=1
x=-1
c)x(3-y)=11
3-y=11/3
-y=11/3-3
-y=2/3
y=-2/3