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kenad888
@kenad888
July 2022
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запишите приведённое квадратное уравнение 1) x1=5 и X2=-3 2) x1=-10 и X2=-6
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МаленькийУчитель
1) (х-5)(х+3) = х²+3х-5х-15 = х²-2х-15
D = 4+60 = 64 = 8²
х₁ =
=
= 5
х₂ =
=
= -3
2)(х+10)(х+6) = х²+6х+10х+60 = х²+16х+60
D = 256-240 = 16
х₁ =
=
= -6
х₂ =
=
= -10
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Answers & Comments
D = 4+60 = 64 = 8²
х₁ = = = 5
х₂ = = = -3
2)(х+10)(х+6) = х²+6х+10х+60 = х²+16х+60
D = 256-240 = 16
х₁ = = = -6
х₂ = = = -10