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lornbeach
 3 years ago
Simplify the given expression:
lornbeach
 3 years ago
Simplify the given expression:

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lornbeach
 3 years ago
Best ResponseYou've already chosen the best response.0thats not an answer choice

maym0Re97
 3 years ago
Best ResponseYou've already chosen the best response.0What are the choices?

lornbeach
 3 years ago
Best ResponseYou've already chosen the best response.07+7i/2 63+7i/82 7+7i/2 63+7i/82

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0\[ \sqrt{49} = \sqrt{49 \dot\ 1} = \sqrt{49} \sqrt{1} = 7i \\(3 + 4i)  (2  5i) = (3  2) + (4i + 5i) = 1 + 9i \]

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0I have to agree with @maym0Re97

maym0Re97
 3 years ago
Best ResponseYou've already chosen the best response.0Lol that's what I got, but it's not an answer choice

lornbeach
 3 years ago
Best ResponseYou've already chosen the best response.0i got that answer as well, but it isnt a choice

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0There's probably an equivalent choice

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0Multiply top and bottom by 1  9i and see what happens

lornbeach
 3 years ago
Best ResponseYou've already chosen the best response.0would it be 63+7i/82?

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1your job is to rewrite in standard form as \(a+bi\) which means do what @hero said

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1\[\frac{7i}{1+9i}\times \frac{19i}{19i}\] the denominator is \(1^2+9^2=82\) all the work is in the numerator
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