Simplify (7/9a+9/7b)^2-ab
1 answer:
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Answer:
The correct option is c.
Step-by-step explanation:
It is given that Judy completes a puzzle by herself, it takes her 3 hours.
The part of puzzle completed by Judy in one hour is .
Rate is a part of word done by a person in one unit of time.
It means the Judy's rate to complete the puzzle is .
Therefore the correct option is c.
Answer:
8 (see work)
14. 2x^2 -4x^2 +3
Step-by-step explanation:
There's attached work for explanation
