Toán Lớp 8: 1) 4???? ( ???? − 5 ) − ( ???? − 1 )( 4???? − 3 ) = 5
2) 8x^3 – 50x = 0
3) (2x-1)^ 2 – 25 = 0
4) (x + 3)^2 = 9(2x – 1)^2
5) (2x + 1)(4x^2 – 2x +1) – 8x(x^2+ 2) = 17
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Toán Lớp 8: 1) 4???? ( ???? − 5 ) − ( ???? − 1 )( 4???? − 3 ) = 5
2) 8x^3 – 50x = 0
3) (2x-1)^ 2 – 25 = 0
4) (x + 3)^2 = 9(2x – 1)^2
5) (2x + 1)(4x^2 – 2x +1) – 8x(x^2+ 2) = 17
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