Question

what is the formula of a²+b²

Answer 1

a²+b² = (a-b)²+2ab or (a+b)²-2ab

Answer 2

Step-by-step explanation:

a²+b²=(a+b)²-2ab

a²+b²-2ab=(a-b)²

a²-b²=(a+b)(a-b)

a³+b³=(a+b)(a²+b²-ab)

a³-b³=(a-b)(a²+b²+ab)

a³+b³+c³-3abc=(a+b+c)(a²+b²+c²-ab-bc-ca)

a³+b³+3ab(a+b)=(a+b)³

a³-b³-3ab(a-b)=(a-b)³