Answers: 1
![\bf \cfrac{\sqrt{-49}}{(7-2i)-(4-9i)}\implies \cfrac{\sqrt{-1\cdot 49}}{(7-2i)-4+9i}\implies \cfrac{\sqrt{-1}\cdot \sqrt{49}}{3+7i} \\\\\\ \stackrel{\textit{multiplying top/bottom by the conjugate of the denominator }(3-7i)}{\cfrac{7i}{3+7i}\cdot \cfrac{3-7i}{3-7i}\implies \cfrac{7i(3-7i)}{\stackrel{\textit{difference of squares}}{(3+7i)(3-7i)}}\implies \cfrac{21i-(7i)^2}{[3^2-(7i)^2]}}](/tpl/images/0052/4554/fc04d.png)
![\bf \cfrac{21i-(7^2i^2)}{[9-(7^2i^2)]}\implies \cfrac{21i-(49(-1))}{[9-(49(-1))]}\implies \cfrac{21i+49}{9+49}\implies \cfrac{49+21i}{58}](/tpl/images/0052/4554/e17ba.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 14:00, chriscol4082
Aportion of a line bounded by two points is defined as
Answers: 1
Mathematics, 21.06.2019 17:10, Andrewecolt1993
Which is a graph of a proportional relationship?
Answers: 1
Mathematics, 21.06.2019 20:30, ellie55991
Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )
Answers: 3
Mathematics, 21.06.2019 20:30, amauris77748
There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?
Answers: 3
Do you know the correct answer?
Rationalize the denominator of: [tex] \frac{ \sqrt{ - 49} }{(7 - 2i) - (4 - 9i)} [/tex]a. [tex] \fra...
Questions in other subjects:
Mathematics, 14.07.2021 06:30
Physics, 14.07.2021 06:30
Mathematics, 14.07.2021 06:30
English, 14.07.2021 06:30
Physics, 14.07.2021 06:30
