X Складіть квадратне рівняння видуах2 +bx +c=0, в я 1) a=1, b=-2, c=3; 5) а = 2, b = -1, с = 5; 6) b=-5, c=3, a=-1; 2) b=4, a=-1, c=4; 3) c=-5, a=2, b=-1; 7) c = -4, b = 2, а = -3; 4) b=0, c=9, a= -1; 8) c=0, a=5, b=-3. 2. ​
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