Question

решите (74-х²)*8=200

Answer 1

(74-х²)*8=200
74 - х^2 = 25
х^2 = 74 - 25
х^2 = 49
х1 = -7 ; х2 = 7

Ответ: -7 ; 7.

Answer 2

592-8x^2=200
-8x^2=200-592
-8x^2=-392
8x^2=392
x^2=49
x=7