What is expand ((a-1)(a+3))/((a-7)(a+7)) ?

The solution to expand ((a-1)(a+3))/((a-7)(a+7)) is (a^2+2a-3)/(a^2-49)

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expand ((a-1)(a+3))/((a-7)(a+7))

expand

\frac{( a - 1 ) ( a + 3 )}{( a - 7 ) ( a + 7 )}

\frac{a ^{2} + 2 a - 3}{a ^{2} - 49}

Solution steps

\frac{( a - 1 ) ( a + 3 )}{( a - 7 ) ( a + 7 )}

Expand

(a - 7) (a + 7) : a^{2} - 49

= \frac{( a - 1 ) ( a + 3 )}{a ^{2} - 49}

Expand

(a - 1) (a + 3) : a^{2} + 2 a - 3

= \frac{a ^{2} + 2 a - 3}{a ^{2} - 49}

(x cos (θ) - y sin (θ)) (x sin (θ) + y cos (θ))

2 (46 - \frac{10 5}{3})

(x + 52)^{2}

(5 sin (x) - 1) (5 sin (x) + 1)

A + A l e f t (B + C) + Bl e f t (B + C)

What is expand ((a-1)(a+3))/((a-7)(a+7)) ?
The solution to expand ((a-1)(a+3))/((a-7)(a+7)) is (a^2+2a-3)/(a^2-49)