x²+3x=54
x²+3x-54=0
D = b²-4ac => 3²-4*1*(-54) = 9+216 = √225 = 15>0, 2 корня.
x =
x₁ =
x₂ =
Ответ: -9; 6.
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x²+3x=54
x²+3x-54=0
D = b²-4ac => 3²-4*1*(-54) = 9+216 = √225 = 15>0, 2 корня.
x =
x₁ =
x₂ =
Ответ: -9; 6.