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RoseTayler
@RoseTayler
July 2022
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6х(х-3.5)- 2х(3х+2)=25
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GothicWolf
6x(x-3.5)-2x(3x+2)=25
6x^2-21x-6x^2-4x=25
6x^2 взаимно уничтожаются
-21x-4x=25
-25x=25
x=-1
0 votes
Thanks 1
veretenni
6х(х-3.5)- 2х(3х+2)=25
6x(x-3.5)-2x(3x+2)-25=0
(6x)(x-3.5)-(2x)(3x+2)-25=0
(6x
²-21x)-(6x²+4x)-25=0
6x²-21x-6x²-4x-25=0
-25x-25=0
-25x=25
25x=-25
x=(-25)÷25
x=-1
2 votes
Thanks 0
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Answers & Comments
6x^2-21x-6x^2-4x=25
6x^2 взаимно уничтожаются
-21x-4x=25
-25x=25
x=-1
6x(x-3.5)-2x(3x+2)-25=0
(6x)(x-3.5)-(2x)(3x+2)-25=0
(6x²-21x)-(6x²+4x)-25=0
6x²-21x-6x²-4x-25=0
-25x-25=0
-25x=25
25x=-25
x=(-25)÷25
x=-1