factorise:a^3-b^3+1+3ab
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Method of Solution :
a³ - b³ + 1 + 3ab
✏ (a-b)(a²+ab+b²) + 1 + 3ab
Formula Used :
✒ (a³-b³) = (a-b)(a²+ab+b²)
✒ (a³+b³) = (a+b)(a²-ab+b²)
Answer: (a-b)(a²+ab+b²) + 1 + 3ab
a³ - b³ + 1 + 3ab
✏ (a-b)(a²+ab+b²) + 1 + 3ab
Formula Used :
✒ (a³-b³) = (a-b)(a²+ab+b²)
✒ (a³+b³) = (a+b)(a²-ab+b²)
Answer: (a-b)(a²+ab+b²) + 1 + 3ab
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