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lenysich
@lenysich
July 2022
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решить уравнение 5(х-3)(х+3)-(2х+3)²=(х+4)(х-1)-5 пожалуста помогите да 20
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poncikalyj
Ответ:
5x^2+15x-15x-45-4x^2+12x-9=x^2-x+4x-4-
-5
5x^2+15x-15x-4x^2+12x-x^2+x-4x=-4-5+45
+9
9x=45
x=45:9
x=5
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Answers & Comments
Ответ:
5x^2+15x-15x-45-4x^2+12x-9=x^2-x+4x-4-
-5
5x^2+15x-15x-4x^2+12x-x^2+x-4x=-4-5+45
+9
9x=45
x=45:9
x=5