What is expand ((y+6)(y+9))/((y+1)(y-9)) ?

The solution to expand ((y+6)(y+9))/((y+1)(y-9)) is (y^2+15y+54)/(y^2-8y-9)

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expand ((y+6)(y+9))/((y+1)(y-9))

expand

\frac{( y + 6 ) ( y + 9 )}{( y + 1 ) ( y - 9 )}

\frac{y ^{2} + 15 y + 54}{y ^{2} - 8 y - 9}

Solution steps

\frac{( y + 6 ) ( y + 9 )}{( y + 1 ) ( y - 9 )}

Expand

(y + 1) (y - 9) : y^{2} - 8 y - 9

= \frac{( y + 6 ) ( y + 9 )}{y ^{2} - 8 y - 9}

Expand

(y + 6) (y + 9) : y^{2} + 15 y + 54

= \frac{y ^{2} + 15 y + 54}{y ^{2} - 8 y - 9}

y (1 - x^{2}) d y

(- 3 - 2 i)^{8}

(x - 2) (\times + 2)

a^{2} + (x + Δ x)^{2} - x^{2} + a^{2}

\frac{d}{d x} ((f (x, z, y)) (z x^{2} - x y^{2} - y z^{2}))

What is expand ((y+6)(y+9))/((y+1)(y-9)) ?
The solution to expand ((y+6)(y+9))/((y+1)(y-9)) is (y^2+15y+54)/(y^2-8y-9)