5 - 2i 3 + 8i for this problem i would like to know if i should mult. both the tope and the bottom by 3 + 8i. also i already know that (i) to the second power is equal to -1. but how would you work it out?
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Originally Posted by allsmiles 5 - 2i 3 + 8i for this problem i would like to know if i should mult. both the tope and the bottom by 3 + 8i. also i already know that (i) to the second power is equal to -1. but how would you work it out? multiply numerator and denominator by the conjugate of the denominator ... (3 - 8i)
Originally Posted by allsmiles 5 - 2i 3 + 8i for this problem i would like to know if i should mult. both the tope and the bottom by 3 + 8i. also i already know that (i) to the second power is equal to -1. but how would you work it out? $\displaystyle \frac{5-2i}{3+8i} . \frac{3-8i}{3-8i}$
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