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(- x² + 8x - 5) - ( 3x² - 6x + 7)
- x² + 8x - 5 - 3x² + 6x - 7
- x² - 3x² + 8x + 6x - 5 - 7
- 4x² + 14x - 12
Yang B
(2p + 2)(3p - 1)
2p(3p) + 2p(- 1) + 2(3p) + 2(- 1)
6p² - 2p + 6p - 2
6p² + 4p - 2