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katamirka1
@katamirka1
June 2023
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5. Найти наибольший корень уравнения: 9х² - 5x-4=0.
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Mistigry
9x^2-5x-4=0;
9x^2-5x-36=0;
9x^2-9x+4x-4=0;
9x(x-1)+4(x-1)=0;
(x-1)(9x+4)=0;
x-1=0;
x=1;
9x+4=0;
x=-4/9;
Наибольший корень уравнения (x) равен 1.
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Answers & Comments
9x^2-5x-36=0;
9x^2-9x+4x-4=0;
9x(x-1)+4(x-1)=0;
(x-1)(9x+4)=0;
x-1=0;
x=1;
9x+4=0;
x=-4/9;
Наибольший корень уравнения (x) равен 1.