Question

помогите...................................................................................

Answer 1

Решение
1)   (x² - 7x + 12)/(x - 3) = 0

x² - 7x + 12 = 0, x₁ = 3 ; x₂ = 4
x - 3 ≠ 0, x ≠ 3

Ответ: х = 4

2)  (x³ - 64x) / ( x + 4)  = 0
x³ - 64x = 0
x + 4  ≠ 0, x  ≠ - 4

x³ - 64x = 0
x(x² - 64) = 0
x₁ = 0
x² - 64 = 0
x² = √64
x₂ = - 8
x₃ = 8
Ответ: x₁ = 0 ; x₂ = - 8 ; x₃ =  8