Solve each equation bye factoring

1. x²-8x+16=0

2. 2n²-18n+40=0

3. x²-49=0

4. 3x²-75=0

5. 5k²-9k+18=4k²

6. x²-x-6=-6-7x

7. 3a²=-11a-6

8. 14n²-5=33n

9. 5k²+28=27k

10. 3n²-5n=8

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