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NoComments1
@NoComments1
June 2022
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Решите уравнение
(2 - x)^3 + (2 - x)^2*x + 4*(2 - x) = 0
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kratgv
Verified answer
(2 - x)³ + (2 - x)²·x + 4(2 - x) = 0
(2-х)((2-х)²+(2-х)·х+4)=0
(2-х)(4-4х+х²+2х-х²+4)=0
(2-х)(-2х+8)=0
2-х=0 или -2х+8=0
х=2 -2х=-8
х=4
Ответ: 2;4.
2 votes
Thanks 2
NoComments1
Спасибо!!!
krugly1981
( 2 - x)³ + ( 2 - x)² × x + 4( 2 -x) = 0
(2 - x)( (2-x)² +( 2 - x)x + 4) =0
( 2 - x) ( 4 - 4x + x² + 2x - x² + 4) = 0
( 2 - x)( - 2x + 8) = 0
(2 - x)( 8 - 2x) = 0
Произведение равно 0,когда один из множителей равен 0,значит,
2 - x = 0
- x = - 2
x = 2
8 - 2x =0
- 2x = - 8
2x = 8
x = 4
Ответ:x1 = 2, x2 = 4.
1 votes
Thanks 1
NoComments1
Спасибо!!!
krugly1981
пожалуйста,успехов!)))
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Answers & Comments
Verified answer
(2 - x)³ + (2 - x)²·x + 4(2 - x) = 0(2-х)((2-х)²+(2-х)·х+4)=0
(2-х)(4-4х+х²+2х-х²+4)=0
(2-х)(-2х+8)=0
2-х=0 или -2х+8=0
х=2 -2х=-8
х=4
Ответ: 2;4.
(2 - x)( (2-x)² +( 2 - x)x + 4) =0
( 2 - x) ( 4 - 4x + x² + 2x - x² + 4) = 0
( 2 - x)( - 2x + 8) = 0
(2 - x)( 8 - 2x) = 0
Произведение равно 0,когда один из множителей равен 0,значит,
2 - x = 0
- x = - 2
x = 2
8 - 2x =0
- 2x = - 8
2x = 8
x = 4
Ответ:x1 = 2, x2 = 4.