Resposta :
Resposta:
(x²+6)² = (x²+2)² + 8²
([tex]x^{4}[/tex]+12x²+36)=([tex]x^{4}[/tex]+4x²+4)+64
[tex]x^{4}[/tex]+12x²+36 = [tex]x^{4}[/tex]+4x²+68
12x²-4x² = 68 - 36
8x² = 32
x² = 32/8
x² = 4
x = √4
x = ±2
Resposta:
(x²+6)² = (x²+2)² + 8²
([tex]x^{4}[/tex]+12x²+36)=([tex]x^{4}[/tex]+4x²+4)+64
[tex]x^{4}[/tex]+12x²+36 = [tex]x^{4}[/tex]+4x²+68
12x²-4x² = 68 - 36
8x² = 32
x² = 32/8
x² = 4
x = √4
x = ±2