Wednesday

September 17, 2014

September 17, 2014

Posted by **James** on Monday, June 15, 2009 at 10:03pm.

3-i

Simplify: (5-3i)^2

16+30i

Simplify (3+2i) / (4-5i)

(2/41)-(23/41)i

is this right?

- Pre Calculus -
**Reiny**, Monday, June 15, 2009 at 10:50pmthe second one should be

(5-3i)^2

= 25 - 30i + 9i^2

= 16 - 30i

the other two are correct

**Answer this Question**

**Related Questions**

Algebra - 1. LCM of 15x^7 and 45x^7 2. Marla can shovel the driveway in 60min ...

Intermediate Algebra - I have a take home test and I'm stuck on a couple. Anyone...

Math To: Reiny - This is one whole question: (12) (10xy^3) (3x^2y^2) (5x) (2y) ...

algebra - i cannot figure any of this stuff out. please help. if you can there ...

algebra... help soon please - i cannot figure any of this stuff out. please help...

Algebra - 1. Subtract and simplify 18/y-8 - 18/8-y 2. subtract simplify if ...

pre algebra - simplify: -5w(2w^2-w-9) I dont know how to simplify this and ...

Algebra - Simplify A^6 x a^2b^-2 44,909 in scientific notation Simplify (a^2b^3...

pre algebra - simplify: I dont understand on how to answer this and simplify it...

Algebra 2 - 1. Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 2. Simplify: sqrt(72x^3)-5x ...