Wednesday

October 22, 2014

October 22, 2014

Posted by **Bethany** on Monday, March 17, 2008 at 10:21pm.

Square root Property

2k^2 +144=0

2k^2 +144-144=0-144

2k^2=-144

This is where I am confused

2k=sqrt -144 (?)

- Algebra -
**Reiny**, Monday, March 17, 2008 at 10:26pm2k^2 = -144

k^2 = -72

Unless you have studied complex numbers you would stop here and say

"there is no real solution" since you cannot take the square root of a negative.

If you studied complex numbers you should know that i = √-1

so x = √-72

x = ±6√2 i

**Answer this Question**

**Related Questions**

algebra - Solve for s in this equation. Depreciation. D=C-s/n This is my answer ...

English 102 - I am not asking anyone to do my homework, i am just asking for ...

Calculus - average velocity - *VELOCITY OF A CAR* Suppose the distance s (in ...

Chem Urgency - Can you explain what the pseudo-gas configuration is? I have the ...

Differentiate - Can someone please differentiate y = sin x / x for me? What I ...

Algebra Systems with Substitution - I have a similar problem to <3Medic+Droid...

Math (Algebra) - Could I have someone check my work please? If I did something ...

calculus - what is the derivative? - Let f(x) = 2x^2 + 1 a. Find the derivative ...

Calculus - Use the quotient rule to find f'(x): f(x) = [(x+4)(x-5)]/[2x(x+3)] ...

biology - What part of the brain controls sleep and how does it work. I am ...