Question

class 9th maths algebraic identities​

Answer 1

heya here is your answer

(a+b)²=a²+b²+2ab

(a-b)²=a²+b²-2ab

(a³-b³)=(a-b)(a²+b²+ab)

(a³+b³)=(a+b)(a²+b²-ab)

if a+b+c=0 then a³+b³+c³=3abc

(a+b+c)²=a²+b²+c²+2ab+2bc+2ca

thanks