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nastya6724
@nastya6724
July 2022
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Решите уравнение: (5x −1)(x +2) +3(x −4)(x +4) =2(2x +3)^2 −8
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Kixcertborn2
Verified answer
(5х-1)*(х+2)+3(х-4)(х+4)=2(2х+3)^2-8
5x^2+10x-x-2+3(x^2-16)=2(4x^2+12x+9)-8
5x^2+10x-x-2+3x^2-48=8x^2+24x+18-8
8x^2+9x-50=8x^2+24x+10
9x-50=24x+10
9x-24x=10+50
-15x=60
x=-4
4 votes
Thanks 4
nastya6724
Спасибо большое)
Kixcertborn2
не списывайте с выше написанного ответа
nastya6724
Хорошо)
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Answers & Comments
Verified answer
(5х-1)*(х+2)+3(х-4)(х+4)=2(2х+3)^2-85x^2+10x-x-2+3(x^2-16)=2(4x^2+12x+9)-8
5x^2+10x-x-2+3x^2-48=8x^2+24x+18-8
8x^2+9x-50=8x^2+24x+10
9x-50=24x+10
9x-24x=10+50
-15x=60
x=-4