prove that
a3-b3 = (a - b) (a² +b² + ab)
Answers
Answered by
1
Step-by-step explanation:
Let's solve for a.
a3−b3=(a−b)(a2+b2+ab)
Sorry, I don't know how to solve this equation.
Answered by
2
Answer:
a³-b³ = (a - b) (a² +b² + ab)
Step-by-step explanation:
* (a-b)³= a³-3a²b+3ab²-b³
=> a³-b³ = (a-b)³ +3a²b - 3ab²
= (a-b)³ + 3ab(a-b)
= (a-b)[(a-b)²+ 3ab]
= (a-b)( a²-2ab+b² +3ab)
= (a-b)(a²+b²+ab)
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