Ответы на вопрос:
2x²-0,5x+1,5=0 2x²+0,5x-1,5=0 d=1/4+4*2*1.5=(3.5)^2 x1=(-0.5-3.5)/4=-1 x2=(-0.5+3.5)/4=0.75 -1,2m²+2,6m-1=0 1.2m²-2.6m+1=0 d=6.76-4.8=1.96 x1=(2.6+1.4)/2.4=1 2/3 x2=(2.6-1.4)/2.4=-0.5 4b²-11b-3 =0 d=121+4*4*3=121+48=169 x1=(11+13)/8=24/8=3 x2=(11-13)/8=-1/4=-0.25 0,3m²-3m+7,5=0 разделим на 0.3 m^2-10m+25=0 (m-5)^2=0 m=5
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