What is expand ((n+2)(-11n+15))/2 ?

The solution to expand ((n+2)(-11n+15))/2 is -(11n^2)/2-(7n)/2+15

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expand ((n+2)(-11n+15))/2

expand

\frac{( n + 2 ) ( - 11 n + 15 )}{2}

- \frac{11 n ^{2}}{2} - \frac{7 n}{2} + 15

Solution steps

\frac{( n + 2 ) ( - 11 n + 15 )}{2}

Expand

(n + 2) (- 11 n + 15) : - 11 n^{2} - 7 n + 30

= \frac{- 11 n ^{2} - 7 n + 30}{2}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- 11 n ^{2} - 7 n + 30}{2} = - \frac{11 n ^{2}}{2} - \frac{7 n}{2} + \frac{30}{2}

= - \frac{11 n ^{2}}{2} - \frac{7 n}{2} + \frac{30}{2}

Divide the numbers:

\frac{30}{2} = 15

= - \frac{11 n ^{2}}{2} - \frac{7 n}{2} + 15

(1 + x^{2}) ln (x)

A (s (s - 3)^{2})

\frac{m ( g ^{2} - a ^{2} )}{( b + a ) ( b - a )}

(3 + 6 + 3 t) (3 - 6 + 3 t)

, 5 x (5 x^{2} + 2)

What is expand ((n+2)(-11n+15))/2 ?
The solution to expand ((n+2)(-11n+15))/2 is -(11n^2)/2-(7n)/2+15