<prompt> Tafuta emphpositive x halisi kiasi kwamba frac12left 3x2-1right left x2-50x-10 kuliakushoto x225x5kulia.  <response>: Andika a x2-50x-10 na b x225x5. Kisha equation iliyotolewa inakuwafraca2b-12 ab,hivyo 02ab-a-2b1a-12b-1. Kisha a-1x2-50x-110 au 2b-12x250x90. Ya kwanza ina mzizi chanya, x25 2sqrt159, huku ya pili haina. 