What is expand (a(1-r^n))/(1-r) ?

The solution to expand (a(1-r^n))/(1-r) is (a-ar^n)/(1-r)

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expand (a(1-r^n))/(1-r)

expand

\frac{a ( 1 - r ^{n} )}{1 - r}

\frac{a - a r ^{n}}{1 - r}

Solution steps

\frac{a ( 1 - r ^{n} )}{1 - r}

Expand

a (1 - r^{n}) : a - a r^{n}

= \frac{a - a r ^{n}}{1 - r}

x (x - y)

16 x 2 - 24 x y + 9 y 2

(t^{2} + t) sin (t)

What is expand (a(1-r^n))/(1-r) ?
The solution to expand (a(1-r^n))/(1-r) is (a-ar^n)/(1-r)