Question

Calculati :

(x-2)(x+2)(x la a 2+4)( x la a 2 +1 la a 2)+2(x+1) totul la a 2

Answer 1

(x-2)(x+2)(x²+4)(x²+4)(x²+1)²+2(x+1)²
(x²+2x-2x-4)(x∧4+4x²+4x²+16)(x²)²+2x²+1+2x²+4x+1)=
(x²-4)(x∧4+8x²+16)(x∧4+4x²+4x+2)=
(x∧8+8x∧4+16x²-4x∧4-32x²-64)(x∧4+4x²+4x+2)=
(x∧8+4x∧4-16x²-64)(x∧4+4x²+4x+2)=
x∧32+4x∧16+4x∧9+2x∧8+4x∧16+16x∧8+8x∧4-16x∧8-64x∧4-64x³+32x²-64x∧4-256x²-256x-128

x∧32+8∧16+4x∧9-55x∧4-64x³+224x²-256x-128
sucees
∧⇒ridicarea la putere