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(3−a)2−√0,2.√180a2=9−6a+a2−√0,2.180a2=9−6a+a2−√36a2=9−6a+a2−6|a|=[9−6a+a2−6akhia≥09−6a+a2+6akhia<0=[9−12a+a2khia≥09+a2khia<0.
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(3−a)2−√0,2.√180a2=9−6a+a2−√0,2.180a2=9−6a+a2−√36a2=9−6a+a2−6|a|=[9−6a+a2−6akhia≥09−6a+a2+6akhia<0=[9−12a+a2khia≥09+a2khia<0.