化简 7/(5-2i)

解答

化简

\frac{7}{5 - 2 i}

\frac{35}{29} + \frac{14}{29} i

求解步骤

\frac{7}{5 - 2 i}

乘以共轭根式

\frac{5 + 2 i}{5 + 2 i}

= \frac{7 ( 5 + 2 i )}{( 5 - 2 i ) ( 5 + 2 i )}

化简

\frac{7 ( 5 + 2 i )}{( 5 - 2 i ) ( 5 + 2 i )} : \frac{35 + 14 i}{29}

= \frac{35 + 14 i}{29}

Rewrite in standard complex form:

\frac{35}{29} + \frac{14}{29} i

= \frac{35}{29} + \frac{14}{29} i

\frac{4}{3} \cdot 4^{3}

5 x^{2} + 6 x - 8 = - 7

45 + u = 93

f a c t or 64 x^{2} - 25 y^{2}

(x - 1) (x - 5) (x - 6) \geq 0