rbart3332 rbart3332
  • 09-01-2018
  • Mathematics
contestada

What are the solutions of x^2 + 121 = 0?

A. -11, 11

B. 11, 11i

C. 11, -11i

D. -11i, 11i

Respuesta :

chloebuster123 chloebuster123
  • 09-01-2018
The answer would be D. -11i and 11i
Answer Link
meganann1188oryacy meganann1188oryacy
  • 12-01-2018
To solve this question you need to set up the equation and simplify
x^2 +121 = 0     you need to get the x^2 by itself so subtract 121
x^2 = -121   Now take the square root of both sides. but you can;t take the square root of a negative number which is where the i comes into play. 
 x= + -  11 i 


Answer Link

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