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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: √x ²+x+1 = √2x ²-5x+9 Tìm đk rồi tính giúp mình nhé

Toán Lớp 9: √x ²+x+1 = √2x ²-5x+9
Tìm đk rồi tính giúp mình nhé

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222-9+11+12:2*14+14 = ? ( )

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