Odpowiedź:
[tex]a = {7}^{7} \div {7}^{2} \div {7}^{5} = {7}^{7 - 2 - 5} = {7}^{0} = 1 \\ 1 \times \sqrt{9} = 1 \times 3 = 3[/tex]
Zadanie
a = 7⁷ : 7² : 7⁵ = 7⁷⁻² : 7⁵ = 7⁵ : 7⁵ = 7⁵⁻⁵ = 7⁰ = 1
b = √9 = 3
a · b = 1 · 3 = 3
Odp. "3"
