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

The solution to expand 1/((x^2+1)(x^2+4)) is 1/(x^4+5x^2+4)

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

expand

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

\frac{1}{x ^{4} + 5 x ^{2} + 4}

Solution steps

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

Expand

(x^{2} + 1) (x^{2} + 4) : x^{4} + 5 x^{2} + 4

= \frac{1}{x ^{4} + 5 x ^{2} + 4}

(x - 1 + x^{2})^{2}

(cos (4 t) + cos (3 t))^{2}

(1 - 3 y i)^{2}

3 (x + Δ x)

P (- 2, - 3) Q (3, 4)

What is expand 1/((x^2+1)(x^2+4)) ?
The solution to expand 1/((x^2+1)(x^2+4)) is 1/(x^4+5x^2+4)