przedstaw w postaci x^{k}\\
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...=(x^(5-2))^3 : (x^(-6+1))^-2=
=(x^3)^3 : (x^(-5)^-2=
=x^9 : x^10=
=x^(9-10)=
=x^-1
b)
...=(x^(-1-4))/(x^3)^2 * (x^-2)^-4/(x^(-2-1))=
=(x^-5)/x^6 * (x^8)/(x^-3)=
=x^(-5-6) * x^(8+3)=
=x^-11 * x^11=
=x^(-11+11)=
=x^0
a^m*a^n=a^(m+n)
a^m:a^n=a^(m-n)
(a^m)^n=a^(m*n)
a^-n=1/a^n