Question: Exercises Simplify. 1. (-4+ 20) + (6 -31) 2. (5 - D) - (3 -21) 3. (6 - 3D) + (4 -21) 4. (-11+41) -

Exercises Simplify. 1. (-4+ 20) + (6 -31) 2. (5 - D) - (3 -21) 3. (6 - 3D) + (4 -21) 4. (-11+41) - (1 - 5 1) 5. (8 + 40) + (8 -41) 6. (5+ 20) - (-6 -3 D) 7. (2+D)(3 - D) 8. (5 - 21)(4 - D) 9. (4 - 21)(1 - 21) 7-13i 6-5i 10. 11. 12. 3+i 2i 3i

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