Question

expand (x - 1)³ solve it fast please ​

Answer 1

Step-by-step explanation:

$(x - 1)^{3}$

$Formula :$ $(a + b)^{3} = a^{3} + b^{3} + 3ab(a + b)$

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