Question

efectuati a)9^45÷9^42-2^1×3^3+20^2 b)4^3×5^2+225^1×12^2-54^0

Answer 1

a) 9^45÷9^42-2^1×3^3+20^2  = 9^3 -2x3^3 + 20^2 = 729 - 54 + 400 = 1075

b) 4^3×5^2+225^1×12^2-54^0 = 64 x 25 + 225 x 144 - 1 = 1600 + 32400 - 1= 33999