展开 (110+110(1.732)i)*(9-27i)/(80+60i=9-27i)

解答

展开

(110 + 110 (1.732) i) \cdot \frac{9 - 27 i}{80 + 60 i = 9 - 27 i}

110 \cdot \frac{9 - 27 i}{80 + 60 \cdot 9 i = - 27 i} + 110 (1.732) i \frac{9 - 27 i}{80 + 60 \cdot 9 i = - 27 i}

求解步骤

(110 + 110 (1.732) i) \frac{9 - 27 i}{80 + 60 i = 9 - 27 i}

= \frac{9 - 27 i}{80 + 60 \cdot 9 i = - 27 i} (110 + 110 (1.732) i)

使用分配律:

a (b + c) = ab + a c

a = \frac{9 - 27 i}{80 + 60 i = 9 - 27 i}, b = 110, c = 110 (1.732) i

= \frac{9 - 27 i}{80 + 60 i = 9 - 27 i} \cdot 110 + \frac{9 - 27 i}{80 + 60 i = 9 - 27 i} \cdot 110 (1.732) i

= 110 \cdot \frac{9 - 27 i}{80 + 60 \cdot 9 i = - 27 i} + 110 (1.732) i \frac{9 - 27 i}{80 + 60 \cdot 9 i = - 27 i}

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

e x p an d e (k t + c)

e x p an d (x - 2) d x

e x p an d \frac{s ^{2} ( s + 3 )}{5 s ^{3} + 17 s ^{2} + 9 s + 6}

s im pl i f y \frac{62.41}{s ( s ^{2} + 62.41 )}