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cajka
@cajka
July 2022
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rovshen24
Ответ на фото//////////
0 votes
Thanks 0
cajka
А y где?
rovshen24
есть же
cajka
Где?
maksimcat
Verified answer
7x^2-5x=7x-5
7x^2-5x-7x+5=0
7x^2-12x+5=0
D=b^2-4ac=144-4×7×5=144-140=4
x1=(-b-√D)/2a=(12-2)/14=10/14=5/7
x2=(-b+√D)/2a=(12+2)/14= 14/14=1
y1=0
y2=2
2 votes
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Answers & Comments
Ответ на фото//////////
Verified answer
7x^2-5x=7x-57x^2-5x-7x+5=0
7x^2-12x+5=0
D=b^2-4ac=144-4×7×5=144-140=4
x1=(-b-√D)/2a=(12-2)/14=10/14=5/7
x2=(-b+√D)/2a=(12+2)/14= 14/14=1
y1=0
y2=2