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+3b&
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