Question

factorise using identity
x^3 - x
So, what will be the answer?

Answer 1

x³-x (taking x common)
x(x²-1)
now, a²-b² = (a+b)(a-b)
x(x+1)(x-1)
hence, factorised...

Answer 2

Hello user !

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$x ( {x}^{2} - 1 ) \\ \\ {a}^{2} - {b}^{2} = ( a - b ) ( a + b ) \\ \\ x ( x + 1 ) ( x - 1 )$

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