Question

Simplify and Express with positive exponents.

(3)

1) (7)3 x (7)-5

2) (-5)1÷ (-5)3
Waite answers pls​

Answer 1

Answer:

1. 1/7²

Step-by-step explanation:

solution 1. 7³ ×7-⁵

= 7³ × 1/7⁵

= 7³/1 × 1/7⁵

= 1/1 × 1/7²

= 1 × 1/7²

= 1/7²

solution 2. 7³ × 7‐⁵

using law of exponent = a^m × a^n

=(a)^m+n

= 7³+(‐⁵)

= 7³-⁵

= 7‐²

as we have to write in positive expansion so the answer will be= 1/7²