Answer:

Step-by-step explanation:
For now, ignore the square root and focus on number inside
Can the number be divided by a perfect square
- If No, the number simplified
- If Yes, the number isn't simplified
90 can be divided by 9. 9 is
so we put 3 on the outside of the square root sign. 10 can only be divided by 1, 2, 5, and 10...None of which are perfect squares. 10 stays inside while 3 is on the outside and it is simplified.
Answer:
B. 60
Step-by-step explanation:
90-30=60
Answer:
Write out all the multiples up to 12 of the numbers
Step-by-step explanation:
This will help you fully see which numbers are their LCM as well as just common multiples
Answer:
Step-by-step explanation:
When multiplying exponents with same base the operation is adding up