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vampw
@vampw
July 2023
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СРОЧНО ПОМОГИТЕ ПОЖАЛУЙСТА!!! ЧЕРЕЗ 40 МИН СДАВАТЬ
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nnonname571
y = 7 + x
y^2 = 25 - x^2
(7 + x)^2 = 25 - x^2
49 + 14x + x^2 = 25 - x^2
2x^2 + 14x + 24 = 0
x^2 + 7x + 12 = 0
D = 49 - 4*12 = 49 - 48 = 1.
x1 = (-14+1)/2= -13/2 = -6,5
x2 = (-14-1)/2 = -15/2 = -7,5
y1 = 7 - 6,5 = 1,5
y2 = 7 - 7,5 = -0,5
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Answers & Comments
y^2 = 25 - x^2
(7 + x)^2 = 25 - x^2
49 + 14x + x^2 = 25 - x^2
2x^2 + 14x + 24 = 0
x^2 + 7x + 12 = 0
D = 49 - 4*12 = 49 - 48 = 1.
x1 = (-14+1)/2= -13/2 = -6,5
x2 = (-14-1)/2 = -15/2 = -7,5
y1 = 7 - 6,5 = 1,5
y2 = 7 - 7,5 = -0,5