8−i3−2i if the expression above is rewritten in the form a+bi, where a and b are real numbers, what is the value of a? (note: i=−1)

8

Step-by-step explanation:

somewhat confusing Q...going w wat the OP said in comments: i3 is i x 3, then it becomes 8 - ix3 - 2i

= 8 - 5i

so a = 8

a=8

Step-by-step explanation:

8−i3−2i

= 8-(3+2)i

=8-5i

in the form of a+bi

a=8

b=-5

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.