erweitern ((21x-9)(15x+3))/7

Lösung

erweitern

\frac{( 21 x - 9 ) ( 15 x + 3 )}{7}

45 x^{2} - \frac{72 x}{7} - \frac{27}{7}

Schritte zur Lösung

\frac{( 21 x - 9 ) ( 15 x + 3 )}{7}

Multipliziere aus

(21 x - 9) (15 x + 3) : 315 x^{2} - 72 x - 27

= \frac{315 x ^{2} - 72 x - 27}{7}

Wende Bruchregel an:

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

\frac{315 x ^{2} - 72 x - 27}{7} = \frac{315 x ^{2}}{7} - \frac{72 x}{7} - \frac{27}{7}

= \frac{315 x ^{2}}{7} - \frac{72 x}{7} - \frac{27}{7}

Teile die Zahlen:

\frac{315}{7} = 45

= 45 x^{2} - \frac{72 x}{7} - \frac{27}{7}

e x p an d (2 d + 4 e)^{2}

e x p an d (x + 2) (x + 1)^{'}

e x p an d 2 (5 ln (10) + 5)

e x p an d d (358.1)

e x p an d d i s t r ib u t e (a + 3) (4 a^{2} + 9 - 3)