Ответы на вопрос:
1 1/4 - 1/3 = 1 3/12 - 4/12 = 15/12 - 4/12 = 11/12 1 2/3-5/6 = 1 4/3 -5/6 = 7/3 -5/6 = 2/3
1.1/4-1/3=5/4-1/3=15/12-4/12=11/12 1.2/3-5/6=5/3-5/6=10/6-5/6=5/6 3.1/8-1/6 =25/8-1/6=75/24-4/24=71/24=2.23/24
25x^2-10x+1-(x^2+8x-6x-48)=85 25x^2-10x+1-x^2-2x+48=85 24x^2-12x-36=0 6x^2-3x-9=0 2x^2-x-3=0 d=1+24=25=5^2 x1=(1+5)/4=1,5 x2=-1 ответ: x1=1,5; x2=-1
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