Question

simplyfy 789^3+211^3/(789^2-789*211+211^2)

Answer 1

let 789 be a
and 211 be b
so, a³ + b³ /a² - ab + b²
now, (a+b)(a² - ab + b²)/ a² - ab + b² = a + b = 789 + 211 = 1000