化简:3a^2-[5a-(1/2a-3)+2a^2]
2个回答
3a^2-[5a-(1/2a-3)+2a^2]
=3a²-(5a-1/2a+3+2a²)
=3a²-2a²-4.5a-3
=a²-4.5x-3
相关问题
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2^2-16/a^-2a-3 *a-3/a^2-5a+4 化简
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