What is expand (4t)/((t^2+1)^2) ?

The solution to expand (4t)/((t^2+1)^2) is (4t)/(t^4+2t^2+1)

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expand (4t)/((t^2+1)^2)

expand

\frac{4 t}{( t ^{2} + 1 ) ^{2}}

\frac{4 t}{t ^{4} + 2 t ^{2} + 1}

Solution steps

\frac{4 t}{( t ^{2} + 1 ) ^{2}}

(t^{2} + 1)^{2} = t^{4} + 2 t^{2} + 1

= \frac{4 t}{t ^{4} + 2 t ^{2} + 1}

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What is expand (4t)/((t^2+1)^2) ?
The solution to expand (4t)/((t^2+1)^2) is (4t)/(t^4+2t^2+1)