计算:(5a²-3b)-(a²-2b) .计算:(5a²-3b)-(a²-2b) 化简:5(a²b-3ab²)-2(a²b-7ab²)
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计算:(5a²-3b)-(a²-2b) .计算:(5a²-3b)-(a²-2b) 化简:5(a²b-3ab²)-2(a²b-7ab²)
计算:(5a²-3b)-(a²-2b) .
计算:(5a²-3b)-(a²-2b) 化简:5(a²b-3ab²)-2(a²b-7ab²)
计算:(5a²-3b)-(a²-2b) .计算:(5a²-3b)-(a²-2b) 化简:5(a²b-3ab²)-2(a²b-7ab²)
(5a²-3b)-(a²-2b)
=5a²-3b-a²+2b
=4a²-b
5(a²b-3ab²)-2(a²b-7ab²)
=5a²b-15ab²-2a²b+14ab²
=3a²b-ab²
计算:(5a²-3b)-(a²-2b)
原式=5a²-3b-a²+2b
=4a²-b
化简:5(a²b-3ab²)-2(a²b-7ab²)
原式=5a²b-15ab²-2a²b+14ab²
=3a²b-ab²
(5a²-3b)-(a²-2b)
=5a²-3b-a²+2b
=4a²-b
5(a²b-3ab²)-2(a²b-7ab²)
=5a²b-15ab²-2a²b+14ab²
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(5a²-3b)-(a²-2b)
=5a²-3b-a²+2b
=4a²-b
5(a²b-3ab²)-2(a²b-7ab²)
=5a²b-15ab²-2a²b+14ab²
=3a²b-ab²
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