a i c VconV
b)
\frac{(x^3)^4*(x^2)^5}{(x^4)^6}=\frac{x^{12}*x^{10}}{x^{24}}=\frac{x^{22}}{x^{24}}=x^{22-24}=x^{-2}
d)
(-\frac{0,1a^3b^2}{c})^2=\frac{0,1^2*a^{3*2}*b^{2*2}}{c^2}=\frac{0,01a^6b^4}{c^2}
e)
\frac{x^2}{(2x)^{-3}}=x^2:(\frac{1}{2x})^3=x^2:\frac{1}{8x^3}=x^2*8x^3=8x^5
f)
(-2a^3)^4+(2a^4)^3-(3a^6)^2+(a^2)^5=16a^{12}+8a^{12}-9a^{12}+a^{10}=15a^{12}+a^{10}