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Lolinio
@Lolinio
August 2022
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Triton225
Х - 220/х = 12
х*х / х - 220/х = 12*х / х
х²-220 / х = 12х / х
х²-220-12х / х = 0
ОДЗ: х≠0
х²-12х-220 = 0
D = 144+880 = 1024
х₁ = 12-32 / 2 = -10
х₂ = 12+32 / 2 = 22
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Verified answer
Х-220\х=12. |×х
2х-220=12х
2х-12х=220
-10х=220
-х=22
х=-22
0 votes
Thanks 0
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Answers & Comments
х*х / х - 220/х = 12*х / х
х²-220 / х = 12х / х
х²-220-12х / х = 0
ОДЗ: х≠0
х²-12х-220 = 0
D = 144+880 = 1024
х₁ = 12-32 / 2 = -10
х₂ = 12+32 / 2 = 22
Verified answer
Х-220\х=12. |×х2х-220=12х
2х-12х=220
-10х=220
-х=22
х=-22