Question

помогите пожалуйста , очень нужно​

Answer 1

$(x - 5)(x {}^{2} - 4x + 4) = 10(x - 2)$

$x {}^{3} - 4x {}^{2} + 4x - 5x {}^{2} + 20x - 20 = 10x - 20$

$x {}^{3} - 4x {}^{2} + 4x - 5x {}^{2} + 20x = 10x$

$x {}^{3} - 9x {}^{2} + 24x = 10x$

$x {}^{3} - 9x {}^{2} + 24x - 10x = 0$

$x {}^{3} - 9x {}^{2} + 14x = 0$

$x \times (x {}^{2} - 9x + 14) = 0$

$x \times (x {}^{2} - 2x - 7x + 14) = 0$

$x \times (x \times (x - 2) - 7(x - 2)) = 0$

$x \times (x - 2) \times (x - 7) = 0$

$x = 0$

$x - 2 = 0$

$x - 7 = 0$

$x = 0 \\ x = 2 \\ x = 7$

$x _{1} = 0,x_2 = 2,x_3 = 7$