024.19. a) -2x² + 50 = 0; б) -3x² + 4 = 0;

Решение:

а) −2x² + 50 = 0

−2x² = −50

x² = 25

x = ±√25

x = ±5

б) −3x² + 4 = 0

−3x² = −4

x² = 4/3

x = ±√(4/3)

x = ±2/√3

x = ±(2√3)/3

Ответ: a) x = 5, x = -5; б) x = (2√3)/3, x = -(2√3)/3