⒈化简(X/2+3)的平方减去(X/2-3)的平方 ( )A 4X B 5X C 6X D 8X⒉计算2(3+1)(3⒉+1)(3⒋+1)(3⒏+1)+1 = [⒉为平方⒋为4次方 ⒏为8次方]⒊已知X⒉+X-1=0 则X⒊+2X⒉+3 =( ) [⒉为平方⒊为3
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![⒈化简(X/2+3)的平方减去(X/2-3)的平方 ( )A 4X B 5X C 6X D 8X⒉计算2(3+1)(3⒉+1)(3⒋+1)(3⒏+1)+1 = [⒉为平方⒋为4次方 ⒏为8次方]⒊已知X⒉+X-1=0 则X⒊+2X⒉+3 =( ) [⒉为平方⒊为3](/uploads/image/z/5325325-61-5.jpg?t=%E2%92%88%E5%8C%96%E7%AE%80%EF%BC%88X%2F2%2B3%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%E5%87%8F%E5%8E%BB%EF%BC%88X%2F2-3%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9+%EF%BC%88+%EF%BC%89A+4X+B+5X+C+6X+D+8X%E2%92%89%E8%AE%A1%E7%AE%972%EF%BC%883%2B1%EF%BC%89%EF%BC%883%E2%92%89%2B1%EF%BC%89%EF%BC%883%E2%92%8B%2B1%EF%BC%89%EF%BC%883%E2%92%8F%2B1%EF%BC%89%2B1+%3D+%5B%E2%92%89%E4%B8%BA%E5%B9%B3%E6%96%B9%E2%92%8B%E4%B8%BA4%E6%AC%A1%E6%96%B9+%E2%92%8F%E4%B8%BA8%E6%AC%A1%E6%96%B9%5D%E2%92%8A%E5%B7%B2%E7%9F%A5X%E2%92%89%2BX-1%3D0+%E5%88%99X%E2%92%8A%2B2X%E2%92%89%2B3+%3D%EF%BC%88+%EF%BC%89+%5B%E2%92%89%E4%B8%BA%E5%B9%B3%E6%96%B9%E2%92%8A%E4%B8%BA3)
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