Yes I need help real

Question

asked Dec 26, 2023 139k views

1 Answer

Calum Halpin · Answer 1 · 2024-01-02T09:30:23+0000

Question:

Solution:

Let the expression:

$\frac{-5\text{ + 7i}}{3-i}$

this expression is equivalent to:

$\frac{-5\text{ + 7i}}{3-i}\text{ x }(3+i)/(3+i)\text{ }$

that is

$=\text{ }((-5+7i)(3+i))/((3-i)(3+i))\text{ = }(-22+16i)/(10)$

this is equivalent to:

$=\text{ }(-22+16i)/(10)\text{ = }(-22)/(10)\text{ + }(16)/(10)i\text{ }$

then, we can conclude that the correct answer is:

$=\text{ }(-22)/(10)\text{ + }(16)/(10)i\text{ }$

that is:

$=-2.2\text{ + 1.6}i\text{ }$