Question

Simplify this question. ​

Answer 1

Answer:

1). 30

2).1

3).30

Step-by-step explanation:

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Answer 2

Answer:

1). (3^10/3^7) × 3^-5

=(3)^10-7 × 3^-5

=3^3 × 3^-5

= 3^3+(-5)

=3^-2