Dory says that she found one root for her problem of 6 - sqrt of 3. She says she can just assume that another root would be 6+ sqrt of 3. Can she do that? * No, she must work out the problem completely

Yes, according to the quotient theorem, she is justified.

Yes, according to the polynomial property of division, she is justified.

Yes, according to the conjugate root theorem, she is justified.