Question

Calculați:ex 9 va rog mult repede dau punctaj maxim

Answer 1

$\it =225-5\cdot(5^{56}:5^{30}+5^{22}-5^{26}):(5^2)^{10}=225-5\cdot(5^{26}+5^{22}-5^{26}):5^{20}=\\ \\ \\ =225-5\cdot5^{22}:5^{20}=225-5^{23}:5^{20}=225-5^3=225-125=100$