Wednesday

November 26, 2014

November 26, 2014

Posted by **lt** on Sunday, March 1, 2009 at 6:09pm.

Find standard form a +bi

(4 square root -9) ( -3 square root -5)

x^2 -3x+4 evaluated for x=1+i

- Math -
**lt**, Sunday, March 1, 2009 at 6:20pmFor the second one i got 1+3i is this correct

- Math -
**Damon**, Sunday, March 1, 2009 at 6:23pm4 (-9)^.5 * -3 (-5)^.5

-12 (45)^.5

-12 (3*3*5)^.5

-36 sqrt 5

(1+i)^2 -3(1+i) + 4

=

1 + 2 i - 1 - 3 - 3 i + 4

=

(1 -i)

- Math -
**lt**, Sunday, March 1, 2009 at 6:29pmDoesnt i^2 equal -1

**Answer this Question**

**Related Questions**

Algebra - Rationalize each expression by building perfect nth root factors for ...

Math PLEASE HELP ASAP - -PLEASE INCLUDE SOLUTIONS AND EXPLAIN HOW YOU DID IT ...

Math simplifying mixed radicals - Please help me simplify these following mixed ...

Math Help - the square root of 3 times the square root of 15 also the square ...

Advanced Algebra - I some problems that I need help with please. Add or subtact ...

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...

Math ~CHECK MY ANSWER~ - 1) Which of these is a rational number? a. Pi b. Square...

math - What does it mean to have the sqaure root of 5 with a 2 in front of it? ...

Math simplifying mixed radicals - Please help me simplify these following mixed...

Math - Just need some help... Directions: Multiply or raise to the power as ...