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

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

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

expand

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

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

Solution steps

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

Expand

(x^{2} + 1) (y^{2} + 1) : x^{2} y^{2} + x^{2} + y^{2} + 1

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

(1, 3) y (- 1, - 2)

\frac{4 x ^{2}}{( 1 + x ^{2} ) ^{3}}

\frac{2 ( x ^{2} - 1 )}{x ^{2} - 3}

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

\frac{( x - 7 ) ^{2} ( m x - 7 m )}{( x - 7 ) ^{3} + ( m x - 7 m ) ^{2}}

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