Question

imi trebuie urgent ex:8.plsssss

Answer 1

a) $5^{23} : 5^{21}+2^{6}*2^{4}-(2^2)^5= 5^2+2^{10}-2^{10} = 5^2 = 25$
b) $5^4*3^4 - (15^2)^2= (5*3)^4- 15^4= 15^4 - 15^4= 0$
c) $(16-12)^4:4^3-3^7:(3^2-6)^6=4^4:4^3-3^7:(9-6)^6= \\ =4-3^7:3^6 = 4-3 = 1$