计算:(2ab+3b²-5)-(3ab+3b²-8)

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计算:(2ab+3b²-5)-(3ab+3b²-8)
计算:(2ab+3b²-5)-(3ab+3b²-8)

计算:(2ab+3b²-5)-(3ab+3b²-8)
(2ab+3b²-5)-(3ab+3b²-8)
=2ab+3b^2-5-3ab-3b^2+8
=-ab+3