4(a²-2ab)-3(ab-b²)+5(2a²-3b²)化简

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4(a²-2ab)-3(ab-b²)+5(2a²-3b²)化简
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4(a²-2ab)-3(ab-b²)+5(2a²-3b²)化简
4(a²-2ab)-3(ab-b²)+5(2a²-3b²)
化简

4(a²-2ab)-3(ab-b²)+5(2a²-3b²)化简
4(a²-2ab)-3(ab-b²)+5(2a²-3b²)
=4a²-8ab-3ab+3b²+10a²-15b²
=(4a²+10a²)-(8ab+3ab)+(3b²-15b²)
=14a²-11ab-12b²