Question

1. Решите уравнение:

Answer 1

Объяснение:

$x {}^{2} (x - 5) - (x - 2) {}^{3} = x {}^{2} - 4 \\ x {}^{3} - 5x {}^{2} - x {}^{3} + 6x {}^{2} - 12x + 8 = x {}^{2} - 4 \\ - 5x {}^{2} + 6x {}^{2} - 12x + 8 = x {}^{2} - 4 \\ x {}^{2} - 12x + 8 = x {}^{2} - 4 \\ - 12x + 8 = - 4 \\ - 12x = - 4 - 8 \\ - 12x = - 12 \\ x = 1$

Answer 2

Ответ:

$x^2(x-5)-(x-2)^3=x^2-4\\\\x^3-5x^2-(x^3-6x^2+12x-8)=x^2-4\\\\x^2-12x+8=x^2-4\\\\-12x=-12\\\\x=1$