2) (4x - 5) - (3x² - 7x + 8)
= 4x5-3x² + 7x8
= 3x² + 4x + 7x- 8.
= -3x2 + 11x - 13
B explanation
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(4x-5)-(3x²-7x+8)
= 4x-5-3x²+7x-8
= -3x²+11x-13
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