Factorise they following expression a^6-b^6
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First dividing into squares then cubes
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Factorise
=> (a³)²-(b³)²
=> (a³+b³)(a³-b³)
=> (a+b)(a-b)²(a-b)(a+b)²
=> (a+b)(a²-2ab+b²)(a-b)(a²+2ab+b²)
=> a²-b²[a²-(2ab+b²)]
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