Can someone please correct my working out...(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \frac{\beta^2}{(x-1)(x-2)} - \frac{\beta^2}{(x-1)^2}[/tex]

[tex]\frac{\beta^2(x-1)^2 - \beta^2(x-1)(x-2)}{(x-1)(x-2)(x-1)^2}[/tex]

[tex]\frac{\beta^2x^2 - \beta^2 -\beta^2(x^2 - 3x +2)}{(x-1)(x-2)(x-1)^2}[/tex]

[tex]\frac{3\beta^2 + 3\beta^2x}{(x-1)(x-2)(x-1)^2}[/tex]

[tex] \frac{3\beta^2(x -1)}{(x-1)(x-2)(x-1)^2}[/tex]

[tex] \frac{3\beta^2}{(x-2)(x-1)^2}[/tex]

that's my answer..

but the real answer is meant to be:

[tex] \frac{\beta^2}{(x-2)(x-1)^2}[/tex]

Can someone see where i went wrong?

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# Please correct my working out

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