(a2-2ab+2b2)-(2a2-2ab-3ab2)化简

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(a2-2ab+2b2)-(2a2-2ab-3ab2)化简(a2-2ab+2b2)-(2a2-2ab-3ab2)化简(a2-2ab+2b2)-(2a2-2ab-3ab2)化简(a²-2ab+

(a2-2ab+2b2)-(2a2-2ab-3ab2)化简
(a2-2ab+2b2)-(2a2-2ab-3ab2)
化简

(a2-2ab+2b2)-(2a2-2ab-3ab2)化简
(a²-2ab+2b²)-(2a²-2ab-3ab²)
=a²-2ab+2b²-2a²+2ab+3ab²
=-a²+2b²+3ab²