I am finding (▲^2 - x▲)(x^3).(adsbygoogle = window.adsbygoogle || []).push({});

I hope I am correct here...

(▲^2 - x▲)(x^3) = ▲^2(x^3) - x▲(x^3)

= ▲▲(x^3) - x( (x+1)^3 - x^3 )

= ▲( (x+1)^3 - x^3 ) - x( (x+1)^3 - x^3 )

= (x+2)^3 - (x + 1)^3 - (x+1)^3 + x^3 )

- x( (x+1)^3 - x^3 )

Is my solution correct?

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# Solving finite difference

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