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15smail1
@15smail1
June 2022
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(-4х-3)(х-3)=0
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vikaanya7303
(-4х-3)(х-3)=0
-4х-3=0 х-3=0
-4х=3 х=3
х=3:(-4)
х=-3/4
Ответ: х=-3/4, х=3
1 votes
Thanks 1
Картофель11
я решал через квадратное уроавнение, ответы разные. можешь проверить?
15smail1
да ответы равны, 24\8=3 проверила
Картофель11
-4x^2+12x-3x+9=0
-4x^2+9x+9=0
4x^2-9x-9=0
D=b²-4ac
D=81-4*4*(-9)=225
x1=(-b+√D)/2a=(9+15)/8=23/8
x2=(-b-√D)/2a=(9-15)/8=6/8=-3/4=-0.75
1 votes
Thanks 1
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Answers & Comments
-4х-3=0 х-3=0
-4х=3 х=3
х=3:(-4)
х=-3/4
Ответ: х=-3/4, х=3
-4x^2+9x+9=0
4x^2-9x-9=0
D=b²-4ac
D=81-4*4*(-9)=225
x1=(-b+√D)/2a=(9+15)/8=23/8
x2=(-b-√D)/2a=(9-15)/8=6/8=-3/4=-0.75