What is expand ((x-9y)(x-5y))/(2(x+y)) ?

The solution to expand ((x-9y)(x-5y))/(2(x+y)) is (x^2-14xy+45y^2)/(2x+2y)

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expand ((x-9y)(x-5y))/(2(x+y))

expand

\frac{( x - 9 y ) ( x - 5 y )}{2 ( x + y )}

\frac{x ^{2} - 14 x y + 45 y ^{2}}{2 x + 2 y}

Solution steps

\frac{( x - 9 y ) ( x - 5 y )}{2 ( x + y )}

Expand

2 (x + y) : 2 x + 2 y

= \frac{( x - 9 y ) ( x - 5 y )}{2 x + 2 y}

Expand

(x - 9 y) (x - 5 y) : x^{2} - 14 x y + 45 y^{2}

= \frac{x ^{2} - 14 x y + 45 y ^{2}}{2 x + 2 y}

(4 x - 5) (6 x + 4)

(\frac{a x}{3} - b y) (\frac{a x}{3} + b y)

f (t - π)

3 (x + Δ x)^{3}

\frac{1}{x ^{2} ( a x + b )}

What is expand ((x-9y)(x-5y))/(2(x+y)) ?
The solution to expand ((x-9y)(x-5y))/(2(x+y)) is (x^2-14xy+45y^2)/(2x+2y)