Question

The coefficient of x square in the expression (x-1) whole cube

Answer 1

(x - 1)[/tex]^{3}[/tex]

$(x - 1)(x^{2} + 1 + 2x)$

$x^{3} + x + 2x^{2} - x^{2} - 1 - 2x$

$x^{3} - x^{2} - x - 1$

so the coefficient of x$^{2}$ = -1