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# expand and simplify watch

1. have I got these correct?

2. All but number 3 is correct
3. (Original post by Zedress)
All but number 3 is correct
why
4. Well, what's -2-7?
5. (Original post by Zedress)
Well, what's -2-7?
oh -9 not +9 ?
6. Yup, you've got it.
7. Q1 is correct.
For Q4 you forgot the 'x' after 7.
For Q3: 5x - x ≠ -4x

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Updated: March 13, 2018
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