# Simplifying Expressions

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10. (-x - 5)(-x + 5) <----- Simplify

14. [3x2(2x - 3) + 27x3(2x - 3)] / [3x(3 - 2x)] <--------- Simplify

17. (3x2 + 7)(9 - 8x) = 3x2 - 56x + 63 <-------- Describe the mistakes if any

19. See picture <---------- describe the mistakes if any.

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#### Solution Summary

Expressions are simplified and discussed in the solution.

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