Question

Factories a cube + b cube +1 +3ab

Answer 1

a³ + (b)3 + 1³ + 3{1 × a × (b)}

= {a + (b) + 1}{a² + (b)² + 1²+ a(b) + (b)1 + 1a}

= (a+b + 1) (a² + b² + 1 + ab + b + a)