Предмет: Алгебра, автор: kozachukangelina21

2. Знайдіть корені квадратного рівняння 5x?= 9х+2
А) -2 і 0,2;
Б) 2 i-0,2;
В) коренів немає;
г) інша відповідь.​

Ответы

Автор ответа: vladykadysia
1

Ответ:

В ето их корень.......... .............

Автор ответа: AngelOfDreams
5

Ответ: Б

Объяснение:

5x²=9x+2

5x²-9x-2=0

D = (-9)²-4*5*(-2) = 121

x1 = 9+11/10 = 2

x2 = 9-11/10 = -0,2

Если ответ вам помог, просьба отмечать его как лучший.

Решено.

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