Question

12 la 7:(2 la 10 × 3 la 5)

Answer 1

12^7 = (2^2 • 3)^7 = 2^14 • 3^7
2^14 • 3^7 : 2^10 • 3^5 =
2^(14-10) • 3^(7-5)
2^4 • 3^2

Answer 2

12⁷ : (2¹⁰ₓ3⁵) =

= (2²ₓ3)⁷ : (2¹⁰ₓ3⁵)

= 2¹⁴ₓ3⁷ : 2¹⁰ₓ3⁵

= 2¹⁴⁻¹⁰ₓ3⁷⁻⁵

= 2⁴ₓ3²

= 16ₓ9

= 144