Respuesta :

I think it's -11a + 17
BbyGirl2017
a2−2a−3a divided by 2−9a+18−(a2−5a−6a2+9a+8)=21a3−70a2−7a+84 divide by a4−55a2+90a+144=7(a+1)(a−3)(3a−4) divide by (a+1)(a−3)(a−6)(a+8)answer =21a−28 divided by a2+2a−48

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