Question

Multiply [x-(6-4i)][x-(6+4i)]

Answer 1

FOIL it out
so you get x^2 -(6 - 4i)x -(6 + 4i)x + (36 + 16)

Answer 2

much easier than it looks

Answer 3

simplify from there

Answer 4

first of \((a-bi)(a+bi)=a^2+b^2\) so your constant is \(6^2+4^2=36+16=52\)

Answer 5

then
\[-6-6=-12\] (the i's will cancel so ignore them)
and you get
\[x^2-12x+52\]

Answer 6

yup

Answer 7

x^2-12 x+52

Answer 8

thats the answer @sate?

Answer 9

thanks a lot