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

5 0

3 years ago

How to simplify the complex number (9 - 2i) - (-2 + 6i) ?

matrenka [14]

$(9 - 2i) - (-2 + 6i) \\ \\ 9 - 2i + 2 - 6i \\ \\ (9+2) + (-2i - 6i) \\ \\ 11 - 8i \\ \\ Answer: \fbox {11 - 8i}$

3 0

3 years ago

15x + 9y - 2m + 11x + 8y - 3m<br> Helpppplease.

erastovalidia [21]

Help ASAP ! A. Coconut meat is used in the preparation of a variety of dishes. B. Coconut trees are the tallest trees in the South Pacific region. C. Coconuts grow in coastal regions and can float in water. D. Coconut has a hard shell and is neither a nut nor a fruit o

7 0

3 years ago

Let f(x) = 9 – x^2, g(x) = 3 – x. Find (f – g)(x) and its domain.

nadya68 [22]

Simply the answer is -x^2-x+6 but not sure if you want to factor it but it would be (x-2)(x+3) and not sure how to do the domain

6 0

4 years ago