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a) 2*2^7=2^8
b)5^10+5^10+5^10+5^10+5^10+5^10= 5*5^10=5^11
c) 3*(3^15+3^15+3^15)=3*3*3^15=3^17
zad.12
a)9*3^4*81=3^10
b)2^3*16=2^7
c)^6
d)^4
zad.13
a) 1000*(-10)⁸ /10⁹=10³*(-10)⁸/10⁹=10⁴
b)81*(-3)⁵ *(-27)=3⁴*(-3)⁵*(-3)³=3¹²
c)(-1/32)*1/16*(1/2)⁶=(-½)⁵*(½)⁴*(½)⁶=(-½)¹⁵
zad.19
a)(3ab^2)^3=27a3b6
b)a^8b^12=1/16a^8b^12
c)2ab^5/c^2)^2=2^2a^2b/c^4=4a^2b^10/c^4
d)a^5b^6/3x^2)^5=a^25b^30/3^5x^10=(1/3)^5a^25b^30/x^10