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ashirova2003
@ashirova2003
August 2022
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1)(х+3)(х-3)-х(х+5)=0
2)16х в квадрате-49=0
P.S УРАВНЕНИЯ
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Xorowuctzina
1)x^2-3x+3x-9-x^2-5x=0
-9-5x=0
-5x=9
x=-1.8
2)16x^2-49=0
(4x-7)(4x+7)=0
4x-7=0 или 4x+7=0
x=1.75 или x=-1.75
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Thanks 1
mikimaus011
1)(х+3)(х-3)-х(х+5)=0
x²-3x+3x-9-x²-5x=0
-5x-9=0
-5x=9
x= 9/-5
2)16х²-49=0
D=b²-4ac
D=0²-4*16*(-49)=3136
x1;2=(-b±√D)/2a= (±56)/32
x1= 56/32= 7/4
x2= -56/32 = -7/4.
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Answers & Comments
-9-5x=0
-5x=9
x=-1.8
2)16x^2-49=0
(4x-7)(4x+7)=0
4x-7=0 или 4x+7=0
x=1.75 или x=-1.75
x²-3x+3x-9-x²-5x=0
-5x-9=0
-5x=9
x= 9/-5
2)16х²-49=0
D=b²-4ac
D=0²-4*16*(-49)=3136
x1;2=(-b±√D)/2a= (±56)/32
x1= 56/32= 7/4
x2= -56/32 = -7/4.