Factor the expression: x^3 + 125

Tip: a^3 + b^3 = (a+b)(a^2-ab+b^2)
in our case a = x and b = 5
x^3 + 125 = x^3 + 5^3 = (x+5)(x^2-5x+25)

(x+5)(x^2 - 5x + 25)

(x+5)(x^2 + 5x + 25)

a³ ± b³ = (a ± b)(a² ∓ ab + b²)

125 = 5³