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milanabevzenko
@milanabevzenko
August 2022
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решите уровнение (х+4)в квадрате -х в квадрате=2х+1
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SmartGenius
(x + 4)^2 - x^2 = 2x + 1
(x + 4)^2 = x^2 + 2x + 1
(x + 4)^2 - (x + 1)^2 = 0
(x + 4 - x - 1 )(x + 4 + x + 1) = 0
3 (2x + 5) = 0
2x + 5 = 0
2x = - 5
x = - 2,5
1 votes
Thanks 0
ShirokovP
Verified answer
Х+4 в квадрате-это формула
х в кв+8х+16-х в кв=2х+1
8х-2х=1-16
6х=-15
х=-15÷6
х=-5/2 или -2целые1/2 или -2,5
2 votes
Thanks 0
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Answers & Comments
(x + 4)^2 = x^2 + 2x + 1
(x + 4)^2 - (x + 1)^2 = 0
(x + 4 - x - 1 )(x + 4 + x + 1) = 0
3 (2x + 5) = 0
2x + 5 = 0
2x = - 5
x = - 2,5
Verified answer
Х+4 в квадрате-это формулах в кв+8х+16-х в кв=2х+1
8х-2х=1-16
6х=-15
х=-15÷6
х=-5/2 или -2целые1/2 или -2,5