erweitern (a+c=40,0)(25a+15c=7550)

Lösung

erweitern

(a + c = 40, 0) (25 a + 15 c = 7550)

25 a^{2} + 15 a c = 7550

Schritte zur Lösung

(a + c = 40, 0) (25 a + 15 c = 7550)

= (a + 40 \cdot 0 =, c) (25 a + 15 \cdot 7550 = c)

Wende Ausklammerungsregel an (VANI):

(a + b) (c + d) = a c + a d + b c + b d

a = a, b = c = 40, 0, c = 25 a, d = 15 c = 7550

a \cdot 25 a + a \cdot 15 c = 7550 + c = 40, 0 \cdot 25 a + c = 40, 0 \cdot 15 c = 7550

25 aa + 15 a c = 7550 + c = 40, 0 \cdot 25 a + c = 40, 0 \cdot 15 c = 7550

Multipliziere aus

25 aa + 15 a c : 25 a^{2} + 15 a c

25 a^{2} + 15 a c = 7550

e x p an d \frac{2 n}{n + 4} + \frac{7}{n - 1}

e x p an d \frac{( e ^{\frac{x}{a}} - e ^{- \frac{x}{a}} ) ^{2}}{4}

e x p an d \frac{10 s + 4}{s ( s + 1 ) ( s ^{2} + 4 s + 5 )}

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

e x p an d (3 x - 1) (2 x e^{3} + 4 x^{2} - 5)