Question

Очень срочно пожалуйста !!!!

Answer 1

16х^4-625 = 0
(4х^2 - 25)(4х^2 + 25) = 0
(2х - 5)^2 (2х + 5)^2 = 0
(2х - 5)^2 = 0
4х^2 - 20х + 25 = 0
D = 400 - 25•4•4 = 0
x = -b/2a = 20/8 = 2,5
(2x + 5)^2 = 0
4x^2 + 20x + 25 = 0
D = 400 - 25•4•4 = 0
x = -b/2a = -20/8 = -2,5
Ответ: 2,5; -2,5