Question

(x-1).($x^{2} -3x-1)$

Answer 1

= (x - 1).(x² - 3x - 1)

= x.x² + x.(-3x) + x.(-1) -1.x² - 1.(- 3x) - 1.(-1)

= x³ - 3x² - x - x² + 3x + 1

= x³ - 4x² + 2x + 1