Предмет: Алгебра, автор: sem55paihehe46

какое из данных уравнений является квадратным

x³ + 2x = 0

3x - 9 = 0

\sqrt{x} - 9 = 0.2
5x²-4x = 0​

Ответы

Автор ответа: Mrdenk
1

Квадратное уравнение имеет вид

ax² + bx + c = 0

Где, a ≠ 0. Среди данных многочленов, квадратный только 5x²-4x = 0. У него a = 5; b = -4; c = 0

Ответ: 5x²-4x = 0

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