Question

Simplify the given expression
(1 + 2i) • (5 − 3i) ?

Answer 1

5 - 3i + 10i - 6i
5 + i

Answer 2

simplifying gives 5-3i+10i+6 which is =11+7i

Answer 3

how'd you get 11 out of 5 being the only coefficient?

Answer 4

2i * -3i=-6(-1)=6 since i^2 is -1

Answer 5

so, (1+2i)(5-3i)=5-3i+10i+6 where 6 is goten as above

Answer 6

this isn't an equation though, it's an expression, therefore cant be turned into the a, b, c.

Answer 7

sorry change = to

Answer 8

?

Answer 9

you change equal to sign to an implication sign if you wish

Answer 10

but the concept remains the same