(2a+3b)(3a+b)-3ab怎么化简
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(2a+3b)(3a+b)-3ab怎么化简
(2a+3b)(3a+b)-3ab怎么化简
(2a+3b)(3a+b)-3ab怎么化简
展开括号得到 6a²+11ab+3b²-3ab = 6a²+8ab+3b²
(2a+3b)(3a+b)-3ab
=5a^2+3b^2+11ab-3ab
=5a^2+3b^2+8ab
原式=6a²+11ab+3b²-3ab
=6a²+8ab+3b²
先开括号,得6a²+11ab+3b²-3ab
然后化简得,6a²+8ab+3b²
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