SOLUTION: Express each complex number in the form a + bi 1) {{{ sqrt(-12)-sqrt(-48) }}} 2) {{{ (3-2i)^2 }}} 3) {{{ 1/(4-7i) }}} 4) {{{ (sqrt(3)+2i)/(sqrt(3)-2i) }}} 5) 4(3+4i)

SOLUTION: Express each complex number in the form a + bi 1) {{{ sqrt(-12)-sqrt(-48) }}} 2) {{{ (3-2i)^2 }}} 3) {{{ 1/(4-7i) }}} 4) {{{ (sqrt(3)+2i)/(sqrt(3)-2i) }}} 5) 4(3+4i) - 5i(1+i)

Question 713376: Express each complex number in the form a + bi
1)
2)
3)
4)
5) 4(3+4i) - 5i(1+i)
6)
Even if you could just answer one question to give me an idea oh how to do the rest, it will be appreciated. They just all seem so different so I put them all up. Thank you!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Express each complex number in the form a + bi
1)
No i term.
---------------
2)
Use FOIL as usual
=
=
= 5 - 12i
-------------
3)
Multiply NUM and DEN by the conjugate of the DEN (4+7i)
=
=
Same as #3
-----------------
5) 4(3+4i) - 5i(1+i)
Simple
-----------
6)
=
=
= -i

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