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c)(x/2+4)^3=(x/2)^3+3(x/2)^2*4+3*x/2*4^2+4^3=x^3/8+3*x^2/2+24*x/2+64
e)(1/w+3w)^3=(1/w)^3+9/w^2+27w+27w^3
g)(ac+c/3)^3=(ac)^3+a^2*c^3+a*c^3/3+c^3/27
zad25
c)1000+k^3=10^3+k^3=(10+k)(10^2-10k+k^2)=(10+k)(100+-10k+k^2)
e)64m^3+n^3/8=(4m)^3+(n/2)^3=(4m+n/2)(16m^2-2mn+n^2/4)
f)w^3/1000-125/w^3=(w/10)^3-(5/w)^3=(w/10 - 5/w)(w^2/100 + 1/2 +25/w^2)