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- 7若5a4xb3与-a2b2x+y的差仍是单项式,求代数式(3x+2y)2-5(3x-2y)+7(3x+2y)2-3(3x-2y)的值.
- 8Your pronunciation is good,you just need to pay more attention to your grammar.25 out of 30
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