Question

(3 + 4i) - (8 -5i) Write answer in standard form a +bi Group of answer choices

A:-5+9i
B:-5 + 9i

Answer 1

`A=-5+9i`

Explanation:

`\left(3+4i\right)-\left(8-5i\right)\\\\\mathrm{Group\:the\:real\:part\:and\:the\:imaginary\:part\:of\:the\:complex\:number}\\\left(a+bi\right)\pm \left(c+di\right)=\left(a\:\pm \:c\right)+\left(b\:\pm \:d\right)i\\\\=\left(3-8\right)+\left(4+5\right)i\\3-8=-5\\4+5=9\\\\=-5+9i`