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VovanychMiner
@VovanychMiner
July 2022
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у=-х²+8 и у=2х Вычислите координаты точки.
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Evgenia4836
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-x²+8=2x
-x²-2x+8=0
x²+2x-8=0
D=4+32=36
x1=(-2+6)/2=2
x2=(-2-6)/2=-4
y1=4
y2=-8
ответ: (2;4); (-4;-8)
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Answers & Comments
Verified answer
-x²+8=2x-x²-2x+8=0
x²+2x-8=0
D=4+32=36
x1=(-2+6)/2=2
x2=(-2-6)/2=-4
y1=4
y2=-8
ответ: (2;4); (-4;-8)