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3a²=10+2
3a=12
a²=4
a=2Va=-2
-3 ≥0/*(x-1)²
x-1
-3(x-1)≥0
-3x+3≥0
-3x≥-3
x≤1
x∈(-ω, 1)
dziedzina x-1≠0, x≠1
Zadanie 7
Dziedzina: