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= -2a - 3a + 3 - 5
= -5a -2
2. 5x + 8 - 2x^2 -3x - 4
= 5x-3x + 8-4 -2x^2
= 2x + 4 -2x^2
3. 3p^2q + 4q - p^2 - 1 - 2p^2q + 3p^2 - q
= 3p^2q - 2p^2q + 4q - q - p^2 + 3p^2 - 1
= p^2q + 3q + 2p^2 - 1
4. -2x-5-x+2
= -2x -x -5 + 2
= -x -3
5. x^2-8-x^2-3x+6
= x^2 - x -8 +6 -3x
= -2 -3x
maaf kalau salah