Selamet wih

Selamet wih

______________________

10^2 ÷ 10^5 × 10^20 ÷ 10^17

10^(2-5) × 10^20 ÷ 10^17

10^-3 × 10^20 ÷ 10^17

10^(-3+20) ÷ 10^17

10^17 ÷ 10^17

10^(17-17)

10^0

= 1

= $tt {10}^{2} div {10}^{5} times {10}^{20} div {10}^{17}$

= $tt {10}^{(2-5+20-17)}$

= $tt {10}^{(-3+20-17)}$

= $tt {10}^{(17-17)}$

= $tt {10}^{0}$

= 1