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Yuliyabeletska
@Yuliyabeletska
June 2022
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(X-2)^2=(x-9)^2
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grishkova2005
2х^+8-8х=2х^+162-362х^-2х^+36х-8х=162-828х=154Ответ :x=5.5
0 votes
Thanks 1
Yuliyabeletska
В квадрате.
Endorfinchik
X^2-4=x^2-81
Endorfinchik
X^2-4-x^2+81=0, -4+81=77
grishkova2005
x=5.5
toptun80
(x-2)^2-(x-9)^2=0
избавляемся от скобок
x^2+2x*(-2)+(-2)^2+(-x)^2-2x*(-9)-(-9)^2=0
4-81+(-4)x-(-18)x=0
-4x+18x-77=0
14x-77=0
делим обе части на 7
2x-11=0
x=11/2
1 votes
Thanks 2
grishkova2005
Там нет = 0 !
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Answers & Comments
избавляемся от скобок
x^2+2x*(-2)+(-2)^2+(-x)^2-2x*(-9)-(-9)^2=0
4-81+(-4)x-(-18)x=0
-4x+18x-77=0
14x-77=0
делим обе части на 7
2x-11=0
x=11/2