Question

Yes I need help real

Answer 1

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{ }`