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lunnaya09
@lunnaya09
August 2022
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dash42
1.
1.1 D = 25+264=289; корень D = 17
1.2 x1 = -5+17/2=6
1.3 x2= -5-17/2=-11
2.
2.1 x^2+20x+91=0
2.2 D = 400-364=36; корень D = 6
2.3 x1 = -20+6/2=-7
2.4 x2 = -20-6/2=-13
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Answers & Comments
1.1 D = 25+264=289; корень D = 17
1.2 x1 = -5+17/2=6
1.3 x2= -5-17/2=-11
2.
2.1 x^2+20x+91=0
2.2 D = 400-364=36; корень D = 6
2.3 x1 = -20+6/2=-7
2.4 x2 = -20-6/2=-13