Question

Simplify the expression (6+3i)−3(4−7i).

Answer 1

like combining like terms for
\[6+3x-3(4-7x)\] exactly

Answer 2

multiply idk

Answer 3

do you know how to multiply the -3(4-7x) part of what @satellite73 wrote

Answer 4

-12-21x?

Answer 5

-3(-7x)=21x right?

Answer 6

so -3(4-7x) should be -12+21x

Answer 7

so you have
6+3x-12+21x

Answer 8

now you combine the like terms

Answer 9

(6-12)+(3x+21x)
=?

Answer 10

when you are done replace x with i

Answer 11

-6+24x?

Answer 12

magical :)

Answer 13

-6+24i