What is expand (-x^2+a^2)/((x^2+a^2)^2) ?

The solution to expand (-x^2+a^2)/((x^2+a^2)^2) is (-x^2+a^2)/(x^4+2a^2x^2+a^4)

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expand (-x^2+a^2)/((x^2+a^2)^2)

expand

\frac{- x ^{2} + a ^{2}}{( x ^{2} + a ^{2} ) ^{2}}

\frac{- x ^{2} + a ^{2}}{x ^{4} + 2 a ^{2} x ^{2} + a ^{4}}

Solution steps

\frac{- x ^{2} + a ^{2}}{( x ^{2} + a ^{2} ) ^{2}}

(x^{2} + a^{2})^{2} = x^{4} + 2 a^{2} x^{2} + a^{4}

= \frac{- x ^{2} + a ^{2}}{x ^{4} + 2 a ^{2} x ^{2} + a ^{4}}

(\frac{1}{2} + \frac{1}{2} cos (6 x))^{4}

sin (\frac{11 π}{60} + \frac{7 π}{30})

A (2, 1) B (- 3, 2) y C (- 5, - 2)

s g n (x^{2} - 16) 8 - 2 x - x^{2}

(2 y + 1) (2 y - 1)

What is expand (-x^2+a^2)/((x^2+a^2)^2) ?
The solution to expand (-x^2+a^2)/((x^2+a^2)^2) is (-x^2+a^2)/(x^4+2a^2x^2+a^4)