a) x^2 * x^5=x^7
b) a^-2 * a^3=1/a^2 * a^3=a
c) x^3 * x^4 : x^6 =x^7:x^6=x
d) y^28 : y ^13=y^15
e) b^7 * b^3 : b^2=b^10 : b^2=b^8
f) (x^3)^5=x^15
g) [(-a)^2]^4=a^8
h) [(b^4)^12]^0=1
i) [(x^2)^3]^4 =x^20
28. calculati (x,y dif de 0)
a) (2a)^3=8a^3
b) (3a^2)^4=81a^8
c) (4x^2y^3)^2=16x^4y^6
d) (-a^2b^3c)^4=a^8b^12c^4
e) (6x^10y^4z^2)^2=36x^20y^8z^4