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Jamba00
@Jamba00
July 2022
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Помогите, пожалуйста
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ВикаВикторовна
Verified answer
(2х+7)(х-4) = (х+4)(2х-5)
2х²-8х+7х-28 = 2х²-5х+8х-20
-х-3х = -20+28
-4х = 8
х = 8:(-4)
х = -2
2 votes
Thanks 2
anfisa00
X не равен 4, и -4.
(2x+7)*(x-4)=(2x-5)*(x+4)
2x^2-8x+7x-28=2x^2+8x-5x-20
-8x+7x-8x+5x=28-20
-4x=8
x=-2
1 votes
Thanks 0
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Answers & Comments
Verified answer
(2х+7)(х-4) = (х+4)(2х-5)2х²-8х+7х-28 = 2х²-5х+8х-20
-х-3х = -20+28
-4х = 8
х = 8:(-4)
х = -2
(2x+7)*(x-4)=(2x-5)*(x+4)
2x^2-8x+7x-28=2x^2+8x-5x-20
-8x+7x-8x+5x=28-20
-4x=8
x=-2