erweitern (7n(n+1))/2

Lösung

erweitern

\frac{7 n ( n + 1 )}{2}

\frac{7 n ^{2}}{2} + \frac{7 n}{2}

Schritte zur Lösung

\frac{7 n ( n + 1 )}{2}

Multipliziere aus

7 n (n + 1) : 7 n^{2} + 7 n

= \frac{7 n ^{2} + 7 n}{2}

Wende Bruchregel an:

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

\frac{7 n ^{2} + 7 n}{2} = \frac{7 n ^{2}}{2} + \frac{7 n}{2}

= \frac{7 n ^{2}}{2} + \frac{7 n}{2}

(\frac{( a - 5 ) + ( a - 3 ) ^{^{'}} + ( a - 4 ) ^{^{'}}}{( a - 3 ) ^{^{'}}})^{^{'}}

s im pl i f y (x - 1) (x^{2} - 9) (x^{2} - x + \frac{1}{2}) (x^{2} + 4)

e x p an d - sin (θ) (1 - x^{2})

e x p an d x (2 - x^{2})

e x p an d \frac{d}{d ^{4}} (y = 2 x^{4} - 6 x^{3} + 7 x^{2} + 5 x)