Resposta :
x² + (x+1)² + (x+2)² = (√14)²
x² + x²+2x+1 + x²+4x+4 = 14
3x² +6x +5 - 14= 0
3x² +6x -9 = 0. ==> :(3)
x² +2x -3 = 0
∆ = 4+12+16 => √∆=4
x² + (x+1)² + (x+2)² = (√14)²
x² + x²+2x+1 + x²+4x+4 = 14
3x² +6x +5 - 14= 0
3x² +6x -9 = 0. ==> :(3)
x² +2x -3 = 0
∆ = 4+12+16 => √∆=4