I have a biack .a bike is in my room这句话有什么错误

I have a lovely biack cat.翻译 I have a biack .a bike is in my room这句话有什么错误 计算(a+bi)* (a-bi) - i的计算问题a+bi形式 I a-bI 的绝对只是什么 -a+i=bi怎么推出(1-a)i=bi (2+i)/i=a+bi a+b=? 请问横线里填什么,Look at me.I am soft and warm.Iam biack and white .I have two small eyes .I see with them.My f-----food is bamboos.who am I i am a panda. 求求各位亲了 已知a>0,ba,化简Ia+bI-Ia-bI-I-a-bI-Ib-aI=? a biack knife的复数形式是什么 give him a biack eye是什么意思 (a+bi)(a−bi)=? I2-(-a+1)I-Ib-2I+2Ia+bI a/(1+i)=1+bi 求a+b= 若a/(1-i)=1+bi(a,b a+i=1-bi,求a,b的值 已知a,b属于R,i是虚数单位,若(a+i)(1+i)=bi,则a+bi= 已知a＜0,b＞0那么 Ia＋bI－Ia－bI－I－bI＝?