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Mathematics, 25.09.2021 15:20 abrown8483

$x^{4} -2(m+1)x^{2} +m^{2} -4=0$ tìm m để phương trình:

a, vô nghiệm

b, có 4 nghiệm.

c, có 3 nghiệm

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tìm m để phương trình:

a, vô nghiệm

b, có 4 nghiệm.

c, có 3 nghiệ...

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