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(2x-1) ^2+ (2x+1)^2=34

Răspuns :

[tex](2x - 1) {}^{2} + (2x + 1) {}^{2} = 34 = > 4x {}^{2} - 4x + 1 + 4x {}^{2} + 4x + 1 = 34 = > 8x {}^{2} + 2 = 34 = > 8x {}^{2} = 34 - 2 = > 8x {}^{2} = 32 = > x = - 2. \: \: \: \: \: x = 2[/tex]