(2-x)(2+x)(4+x²)+(6-x²)²=(4-x²)(4+x²)+36-12x²+x⁴=16-x⁴+36-12x²+4x⁴
16-(-5)⁴+36-12•(-5)²+4•(-5)⁴=16-625+36-300+2500=1627
(2-x)(2+x)(4+x²)+(6-x²)²=(4-x²)(4+x²)+36-12x²+x⁴=16-x⁴+36-12x²+4x⁴
16-(-5)⁴+36-12•(-5)²+4•(-5)⁴=16-625+36-300+2500=1627