Solve for the X and please tell me how

Answer:
Write the number in scientific notation
1 2 = 1.2 × 10
Round the number to the nearest ten
1 2 ─> 10
Write in expanded form using exponents
12 = 1 × 10¹
Rewrite the number
12
↓
1•2 × 10¹
SOLUTION :
1•2×10¹