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

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

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

expand

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

\frac{sin ^{2} ( x ^{2} - 4 )}{x ^{2} - 4}

Solution steps

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

sin^{2} ((x + 2) (x - 2)) = sin^{2} (x^{2} - 4)

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

Expand

(x + 2) (x - 2) : x^{2} - 4

= \frac{sin ^{2} ( x ^{2} - 4 )}{x ^{2} - 4}

(x^{2} + 1) x

\frac{z ^{3}}{( z + 1 ) ( z - 1 ) ^{2}}

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

50 (1 - e^{2})

\frac{( t + 1 ) ^{2}}{2}

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