What is expand (36x)/((x^2+9)^2) ?

The solution to expand (36x)/((x^2+9)^2) is (36x)/(x^4+18x^2+81)

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expand (36x)/((x^2+9)^2)

expand

\frac{36 x}{( x ^{2} + 9 ) ^{2}}

\frac{36 x}{x ^{4} + 18 x ^{2} + 81}

Solution steps

\frac{36 x}{( x ^{2} + 9 ) ^{2}}

(x^{2} + 9)^{2} = x^{4} + 18 x^{2} + 81

= \frac{36 x}{x ^{4} + 18 x ^{2} + 81}

cos (x) (1 - sin (x))

\frac{1 - 2 e ^{- s}}{s ^{2} ( s ^{2} + 1 )}

\frac{( x + 2 ) ^{3}}{3}

1 + cos (x) (1 + cos (x))

(sec (a) - tan (a)) (sec (a) + tan (a))

What is expand (36x)/((x^2+9)^2) ?
The solution to expand (36x)/((x^2+9)^2) is (36x)/(x^4+18x^2+81)