Question

5 la a noua:25 la a patra+{16x4 la a cincea:8 la a treia-3 x [(2 la a cincea x 3)la a patra -2 la 20 x 81]}

Answer 1

5^9:(5^2)^4+(2^4:(2^2)^5:(2^3)^3-3(2^20 X 3^4 - 2^20 X 3^4)=
5^9 : 5^8+ (2^4:2^10:2^9 - 3 X 0)=
5 + (2^3 -0)=
5 + 8= 13