А) x^2 - x - 2 = (x-2)(x+1) = 0
x1 = - 1; x2 = 2
Б) 2x^2 + x = x(2x+1) = 0
x1 = - 0,5; x2 = 0
В) 2x^2 - 3x - 2 = (x-2)(2x+1) = 0
x1 = - 0,5; x2 = 2
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Answers & Comments
А) x^2 - x - 2 = (x-2)(x+1) = 0
x1 = - 1; x2 = 2
Б) 2x^2 + x = x(2x+1) = 0
x1 = - 0,5; x2 = 0
В) 2x^2 - 3x - 2 = (x-2)(2x+1) = 0
x1 = - 0,5; x2 = 2