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= (4X²+6X+9)(4X²-6X+9)=
= 16X⁴-24X³+36X²+24X³-36X²+54X+36X²-54X+81=
=16X⁴+36X²+81
b) (2xdo potęgi 3 +x do potęgi 2)do potęgi 2 (x do potęgi 2 -2x do potęgi 3) do potęgi 2 =
= (4x do 9+4x do6 +x⁴)(x⁴-4x do6+4x do9)=
=4xdo13+16xdo15+16xdo18+4xdo10-16xdo12+16xdo15+xdo8-4xdo10+16xdo13=
=20xdo13+16xdo18-16xdo12=
= 16xdo18+20xdo13-16xdo12
b) (2x³+x²)²(x²-2x³)² = (4x⁶+4x⁵+x⁴)(x⁴-4x⁵+4x⁶) = 4x¹⁰-16x¹¹+16x¹²+4x⁹-16x¹⁰+16x¹¹+x⁸-4x⁹+4x¹⁰ = 16x¹²-8x¹⁰+x⁸