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AlinushkaVaginushka
@AlinushkaVaginushka
July 2022
2
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Ребят, помогите пожалуйста с решением:З 1)Решите уравнение
x
²=
2x+63
2)выполните умножение a/a
²-b² *(ab-b²)
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Answers & Comments
CarlStream
Х²-2х-63=0
х₁=
2+√(4+252
) =
2+16
= 9
2 2
х₂=
2-√(4+252
) =
2-16
= -7
2 2
а/(а+в)(а-в)*в(а-в)=ав/(а+в)
0 votes
Thanks 2
miron2077
Verified answer
Х² = 2х + 63
х² - 2х - 63 = 0
х1 + х2 = 2
х1 × х2 = -63
х1 = -9 х2= 7
0 votes
Thanks 1
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Answers & Comments
х₁=2+√(4+252) = 2+16 = 9
2 2
х₂=2-√(4+252) = 2-16 = -7
2 2
а/(а+в)(а-в)*в(а-в)=ав/(а+в)
Verified answer
Х² = 2х + 63х² - 2х - 63 = 0
х1 + х2 = 2
х1 × х2 = -63
х1 = -9 х2= 7