What is expand (s/(s^2-1))(1/(s^2+1)) ?

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

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expand (s/(s^2-1))(1/(s^2+1))

expand

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

\frac{s}{s ^{4} - 1}

Solution steps

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

Remove parentheses:

(a) = a

= \frac{s}{s ^{2} - 1} \cdot \frac{1}{s ^{2} + 1}

Multiply fractions:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

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

Multiply:

s \cdot 1 = s

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

Expand

(s^{2} - 1) (s^{2} + 1) : s^{4} - 1

= \frac{s}{s ^{4} - 1}

cos (2 (t + π))

e^{t} U (t - 4)

\frac{tan ^{2} ( x ^{2} + y ^{2} )}{( 4 x ^{2} + 4 y ^{2} ) ^{2}}

\frac{1}{6} (3 ln ∣ x ∣ - 4 x^{3})

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