Question

Expand the expression (x-5)^3

Answer 1

X^3 - 15x^2 + 75x - 125

Answer 2

Answer:

$x^3$-15$x^{2}$+25x-125

Step-by-step explanation:

This is a quadratic equation, so we need to open the equation first. There are three (x-5), and then we multiply them together, and then combine like terms to get the answer.

(x-5)(x-5)(x-5)=

[x(x-5)-5(x-5)](x-5)=

($x^{2}$-5x-5x+25)(x-5)=

($x^{2}$-10x+25)(x-5)=

x($x^{2}$-10x+25)-5($x^{2}$-10x+25)

$x^3$-$10x^2$+25x-$5x^2$-125=

$x^3$-15$x^{2}$+25x-125