This is so complicated someone help. I’ll brainlist !!
Step-by-step explanation:
2. 7x10^5
3. 5x10^3+3x10^2
4. 4x10^5+7x10^4
5. 9x10^6+5x10^5
6. 3 x10^-4
7. 7x10^-5
8. 4 x 10^-4+ 5x10^-5
9. 3 ×10^-3+ 4x10^-4
10. 7x10^-4+ 2x10^-5+ 4×10^-6