d)
[tex](x-2)^3-(2+x)^3=4-3(x+2)(1+4x)+13\\\\x^3 - 6x^2 + 12x- 8 -8-12x-6x^2-x^3=4-3(x+4x^2+2+8x)+13\\\\x^3 - 6x^2 + 12x- 8 -8-12x-6x^2-x^3=4-3x-12x^2-6-24x+13\\\\x^3 - 6x^2 + 12x- 8 -8-12x-6x^2-x^3-4+3x+12x^2+6+24x-13=0\\\\27x-27=0\\\\27x=27\ \ \ \ \ |:27\\\\x=1[/tex]
e,f - załącznikach
