Question

Efectuati: 9 la puterea 45:9 la puterea 42 - 2 la puterea 1 x 3 la puterea 3+ 20

Answer 1

cred ca e asa!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

${9}^{45} \div {9}^{42} - {2}^{1} \times {3}^{3} + 20$

$= {9}^{45 - 42} - 2 \times 27 + 20$

$= {9}^{3} - 54 + 20$

$= 729 - 54 + 20$

$= 675 + 20$

$= 695$