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Please help quick! It is due in 20 min! Please help!

Please help quick! It is due in 20 min! Please help!-example-1

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Answer:

Explanation:

1. (a + b) (a - b)

2. 2

3. 4.5 or 4
(1)/(2) or
(9)/(2) or if u wanna round up then 5

hope this helps :)

User James Goooseling
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