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求一道行列式计算,a100-1b100-1c100-1d难道没人知道吗,这是大一上学期的内容

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a,1,0,0-1,b,1,00,-1,c,10,0,-1,dr2+(1/a)r1:a,1,0,00,(ba+1)/a,1,00,-1,c,10,0,-1,dr3+[a/(ab+1)]r2:a,1,0,00,(ba+1)/a,1,00,0,(cba+c+a)/(ba+1),10,0,-1,dr4+[(ba+1)/(cba+c+a)]r3:a,1,0,00,(ba+1)/a,1,00,0,(cba+...