Пример 1. 2x·(x+3)=6x-x2.

Question

Пример 1. 2x·(x+3)=6x-x2.

Answer 1

2x(x + 3) = 6x - x²

2x² + 6x = 6x - x²

2x² + 6x - 6x + x² = 0

3x² = 0

x² = 0

x = 0