Factorise:
1. a-b-a^3+b^3
Answers
Answered by
3
Step-by-step explanation:
a³+b³-a-b
a³-a+b³-b=0
a(a²-1)+b(b²-1)=0
a+b=0
a²=1 b²=1 OK friend
Answered by
2
Answer:
a-b-a³+b³
a-a³-b+b³
a(1-a²)-b(1-b²)
a(1+a)(1-a)-b(1-b)(1+b)
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