Question

решите уравнение
3-2x-x²=x-(x-1)×(x+5)​

Answer 1

Ответ:3х-2x-x²=x-x²+4x+5

x-x-4x=x²-x²+5

-4x=5

x=-5/4

Объяснение:

Answer 2

Ответ:

$3 - 2x - x {}^{2} = x - (x - 1)(x + 5) \\3 - 2x - x {}^{2} = x - (x {}^{2} + 5x - x - 5) \\ 3 - 2x - x {}^{2} = x - (x {}^{2} + 4x - 5) \\ 3 - 2x - x {}^{2} = x - x {}^{2} - 4x + 5 \\ 3 - 2x = x - 4x + 5 \\ - 2x + 3x = 5 - 3 \\ x = 2$