Here are the answers to your questions:
Question 1: What is 57 × 58?
The result is 3306. However, it seems the options provided are not correct.
Question 2: What is 85 / 82?
The result is approximately 1.03659. The options provided do not seem to match this calculation.
Question 3: What is 69 ÷ 62?
The result is approximately 1.11290. Again, the options provided do not seem to match.
Question 4: What is 106 x 103?
The result is 10918. The options provided do not reflect this calculation either.
Question 5: What is a² x a³?
The correct answer is a⁵.
Question 6: What is b⁹b³?
The correct answer is b¹².
Question 7: What is (b²)³?
The correct answer is b⁶.
Question 8: What is (58)²?
The result is 3364. The options provided do not match.
Question 9: What is 90?
The answer is simply 90.
If you need help with any calculations or explanations for specific questions, feel free to ask!