erweitern (x-3i)(x+3i)(x-5)

Lösung

erweitern

(x - 3 i) (x + 3 i) (x - 5)

x^{3} - 5 x^{2} + 9 x - 45

Schritte zur Lösung

(x - 3 i) (x + 3 i) (x - 5)

Schreibe

(x - 3 i) (x + 3 i) (x - 5)

um:

(x^{2} + 9) (x - 5)

= (x^{2} + 9) (x - 5)

Apply FOIL method

(x^{2} + 9) (x - 5) : x^{3} - 5 x^{2} + 9 x - 45

= x^{3} - 5 x^{2} + 9 x - 45

e x p an d (e^{t}) (e^{- t} + t e^{- t})

e x p an d \frac{1}{( x + a ) ( x - a )}

e x p an d (2, 3) y (- 2, - 3)

e x p an d \frac{( 2 x - 12 )}{( x - 4 ) ( x - 5 )}

e x p an d x \cdot (\frac{1}{x} + \frac{y}{x ^{2}} - 3 y^{2})