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Alexander357951
@Alexander357951
July 2022
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Решите уравнение х2-4√2х+8=0
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DariosI
Verified answer
D=(4√2)²-4*8=16*2-32=0
x=4√2/2=2√2
2 способ
х²-4√2х+8=0
х²-2√2х-(2√2х-8)=0
х(х-2√2х)-2√2(х-2√2)=0
(х-2√2)(х-2√2)=0
(х-2√2)²=0
х=2√2
1 votes
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Answers & Comments
Verified answer
D=(4√2)²-4*8=16*2-32=0x=4√2/2=2√2
2 способ
х²-4√2х+8=0
х²-2√2х-(2√2х-8)=0
х(х-2√2х)-2√2(х-2√2)=0
(х-2√2)(х-2√2)=0
(х-2√2)²=0
х=2√2