tolong lagi ya buat nanti

1) (-5)^6 × 25^2 / 125
= 5^6 × (5²)² / 5³
= 5^6 × 5^(2×2) / 5^3
= 5^6 × 5^4 / 5^3
= 5^(6+4-3)
= 5^7

2) 3^7 × 7^3 × 2 / (42³)
= 3^7 × 7^3 × 2 / (3.7.2)³
= 3^7 × 7^3 × 2 / (3³ × 7³ × 2³)
= 3^(7-3) × 7^(3-3) / 2^(3-1)
= 3⁴ × 1 / 2²
= 81 / 4