Question: 16. Solve: (b+6) (6-4)=0 17. Solve: z-9=0 18. Solve: 4b-8b=0 19. Solve: z-13z+30=0

16. Solve: (b+6) (6-4)=0 17. Solve: z-9=0 18. Solve: 4b-8b=0 19. Solve:

16. Solve: (b+6) (6-4)=0 17. Solve: z-9=0 18. Solve: 4b-8b=0 19. Solve: z-13z+30=0

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