Решите уравнение
Объяснение:
ОДЗ: x-5≠0 x≠5 x+5≠0 x≠-5.
Ответ: x₁=-2√5 x₂=2√5.
Ответ:
+ = 0
(x-5)(x+5) ≠ 0
(x-5) ≠0 (x+5) ≠0
x ≠ 5 x ≠ -5
x + (4 - х)(х + 5) = 0
х + 4х + 20 - - 5х = 0
+ 20 = 0
= 20
х =
(x-5)%7D%20%2B%5Cfrac%7B4-x%7D%7Bx-5%7D%20%3D0%5C%5C%5Cfrac%7Bx%2B(4-x)(x%2B5)%7D%7B(x%2B5)(x-5)%7D%3D0%5C%5C%5Cfrac%7Bx-x-x%5E2%2B20%7D%7B(x%2B5)(x-5)%7D%3D0%5C%5C%5Cfrac%7B-x%5E2%2B20%7D%7By(x%2B5)(x-5)%7D%20%3D0%5C%20%7C*(-1)%5C%5C%5Cfrac%7Bx%5E2-20%7D%7B(x%2B5)(x-5)%7D%3D0%20%5C%5Cx%5E2-20%3D0%5C%5Cx%5E2%3D20%5C%5Cx_1%2C_2%3D%D0%B1%5Csqrt%7B20%7D%3D%D0%B12%5Csqrt%7B5%7D.)