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EagleZ9911
@EagleZ9911
August 2022
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-4х²-12х+7=0
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mihail174rus
D=(-12)²-4*(-4)*7=144+112=256
x1,2=(12±✓256)/2*(-4)=(12±16)/(-8)
x1=28/(-8)
x1=-3,5
x2=-4/(-8)
x2=0,5
1 votes
Thanks 1
fmif09
Verified answer
А=-4 б=-12 с=7
дискриминант=б квадрат - 4ас
дискриминант=144-112
дискриминант =32
х=-б+-корень из дискриминант делить на 2 а
х=12+-корень из 32делить на 8
1 votes
Thanks 1
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Answers & Comments
x1,2=(12±✓256)/2*(-4)=(12±16)/(-8)
x1=28/(-8)
x1=-3,5
x2=-4/(-8)
x2=0,5
Verified answer
А=-4 б=-12 с=7дискриминант=б квадрат - 4ас
дискриминант=144-112
дискриминант =32
х=-б+-корень из дискриминант делить на 2 а
х=12+-корень из 32делить на 8