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Mathematics

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1. Add:  (4 – 3n – 5n2) + (–2 + n – 3n2)

  –2 – 4n – 8n2

  2 – 2n – 8n2

  2 – 4n – 8n2

  –2 – 2n – 8n2

Question 2.2. Add:  (8x – 2y) + (4x + 4y – 6)

  12x + 2y – 6

  12x – 6y – 6

  12x – 2y – 6

  14xy – 6

Question 3.3. Subtract: (4a2 + b) – (a2 + b)

  5a2

  3a2

  3a2 – 2b

  3a2 + 2b

Question 4.4. Subtract and simplify: (–y2 – 3y – 5) – (–3y2 – 7y + 4)

  2y2 – 10y + 4

  2y2 + 4y – 9

  –2y2 – 10y – 1

  2y2 – 7y – 9

Question 5.5. Add: (13a + 5b) + (a + 5b – 3)

  13a – 3

  14a – 3

  13a +10b – 3

  14a + 10b – 3


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