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17. (3a2 – 2ab + 3b2) - (-a2 – 5ab + 3b2) 18. 5c – [8c – (6 – 3c)] 19. 10x + [3x – (5x – 4)] 20. 3x 2 – [7x- (4x – x2) + 3] 21. x2 – [ - 3x+ ( 4 – 7x)]
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17.

(3a2 – 2ab + 3b2) - (-a2 – 5ab + 3b2)
18.
5c – [8c – (6 – 3c)]
19.
10x + [3x – (5x – 4)]
20.
3x 2 – [7x- (4x – x2) + 3]
21.
x2 – [ - 3x+ ( 4 – 7x)]

User Cloakedninjas
by
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1 Answer

0 votes

Answer:

17. 3ab + 8a

18. -6c + 6

19. 8x + 4

20. x - 3

21. 12x - 4

User Ulrich Schwarz
by
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