(2X+3)^2 - 49 = 0
4X^2 + 12X + 9 - 49 = 0
4X^2 + 12X - 40 = 0
4*(X^2 + 3X - 10) = 0
X^2 + 3X - 10 = 0
D = 9 -4*1*(-10) = 49
V D = 7
X1 = (- 3 + 7) \ 2 = 4\2 = 2
X2 = - 10 \ 2 = - 5
ОТВЕТ: два и минус пять
(2X+3)^2 - 49 = 0
4X^2 + 12X + 9 - 49 = 0
4X^2 + 12X - 40 = 0
4*(X^2 + 3X - 10) = 0
X^2 + 3X - 10 = 0
D = 9 -4*1*(-10) = 49
V D = 7
X1 = (- 3 + 7) \ 2 = 4\2 = 2
X2 = - 10 \ 2 = - 5
ОТВЕТ: два и минус пять