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imanalievak
@imanalievak
July 2022
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х в квадрате + 8х - 13= 0
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komarik21rus
A=1; b=8; c=-13D=b в квадрате-4acD=8 в квадрате -4*1*(-13)D=64-(-52)=64+52=116x1=-b+корень из D/2ax1=-8+корень из 64/2*1x1=8+8/2x1=8дальше x2 находи по формуле:x2=-b-корень из D/2aгде /2 запиши дробью
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