Hi,

 x2 + 144 = 0

x^2 = -144



x = ± 12i

Answer b. would be the proper selection 

RELATED QUESTIONS

Solve c^2 - 144 = 0.
 
a. (-12)
b. (0,12)
c. (12)
d.... (answered by rfer)

Simplify the number using the imaginary unit i.

√-144  <-- square root of... (answered by stanbon)

Find an expression equivalent to 25x^2+144+27x^3+125y^3.

One of the following... (answered by greenestamps)

Express as a single logarithm.
 log6 12+ log6 12

Possible answers:

A) 10g12 144... (answered by MathLover1)

Perform the indicated operation and simplify. Write the answer in the form     a + bi.

 (answered by jim_thompson5910)

Let B = [-1 3 6 -3]. Find -4B.
  A.  [-4 12 24 -12] 
  B.  [-3 1 4 -5] 
  C.  [4 -12... (answered by ikleyn)

9. Given the function f(x) = x2 + 9, find f(-3). 

  
 
 
 A.   
    6    
  
 
  (answered by nyc_function)

Which of the following trinomials is prime over the set of rational numbers?
A x2 – 9x +  (answered by ewatrrr)

-12|9x+1|=144 (answered by jim_thompson5910)