Question

2x(7x − 3) − 5(7x − 3) = 0

Answer 1

Решение и ответ:

2x · (7x − 3) − 5 · (7x − 3) = 0

(2x − 5) · (7x − 3) = 0

(2x − 5) = 0

2x = 5

x = 5/2

x₁ = 2.5

(7x − 3) = 0

7x = 3

x₂ = 3/7

Ответ: x₁ = 2.5; x₂ = 3/7.