Question

(x²-2) elevado a 4 potência

Answer 1

$(x^2-2)^4=(x^2-2)^2.(c^2-2)^2= \\ \\ (x^4-8x^2+4).(x^4-8x^2+4)=\boxed{x^8-16 x^6+72 x^4-64 x^2+16}$

Answer 2

(x²-2)⁴
 (x²-2)² × (x²-2)²
(x⁴-4x²+4) × (x⁴-4x²+4)
x⁸-4x⁴+4x⁴-4x⁶+16x⁴-16x²+4x⁴-16x²+16
x⁸-4x⁶+20x⁴-32x²+16