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f(x)= 4x^2+4x+1-4x^2+4x-1= 8x
g(x)=(4x^2+4x+1)(4x^2-4x+1)
g(x)=16x^4-8x^2+1
b)
f(x)=(x^2-2x+1)-(x^4+2x^3+x^2)
f(x)= -x^4-2x^2-2x+1
g(x)=(x^2-2x+1)(x^4+2x^3+x^2)
g(x)=x^6+2x^5-2x^4+x^2
c)
f(x)= (x^4-1)-(1-x^2)
f(x)= 2x^2-2
g(x)= (x^4-1)(x^4-2x^2+1)
g(x)=x^8-2x^6+2x^2-1
^- do potęgi jakiejś tam