Question

Multiply the complex numbers: (2 + i)(3 - 6i) *

Answer 1

@XioGonz

Answer 2

You need to know the Formula

The formula is :\[(a+bi) • (x+yi) = ax+by•i^2+(ay+bx)i \]
Now, since \[ i^2 = -1 \]
it can be written as :\[ax - by + (ay + bx) i \]
And\[ ( 2 + i) • ( 3 - 6i) =\]
Hence
\[( 12 - 9i) \]

Answer 3

preciate it

Answer 4

Np