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aliskagibadull
@aliskagibadull
July 2022
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решите уравнение:(3-2х)^2-(5+2x)(2x+1)= - 20
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m11m
(3-2x)² - (5+2x)(2x+1)=-20
9-12x+4x² -(10x+4x²+5+2x)=-20
9-12x+4x²-4x²-12x-5=-20
-24x=-20-4
-24x=-24
x=1
Ответ: 1.
12 votes
Thanks 15
aliskagibadull
спасибо
XxXJa6uArXxX
(3-2x)^2 - (5+2x)(2x+1) = -20 =>
(9-12x+4x^2)-(10x+5+4x^2+2x)=-20 =>
9-12x+4x^2-10x-5-4x^2-2x+20=0 =>
24-24x=0 =>
24x=24 =>
x=1
8 votes
Thanks 8
aliskagibadull
спасибо
XxXJa6uArXxX
не за что)
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Answers & Comments
9-12x+4x² -(10x+4x²+5+2x)=-20
9-12x+4x²-4x²-12x-5=-20
-24x=-20-4
-24x=-24
x=1
Ответ: 1.
(9-12x+4x^2)-(10x+5+4x^2+2x)=-20 =>
9-12x+4x^2-10x-5-4x^2-2x+20=0 =>
24-24x=0 =>
24x=24 =>
x=1