abbysimpson1239 abbysimpson1239

13-01-2015
Mathematics

contestada

How do you find the roots for this following quadratic equation?
x²+9=0

Respuesta :

konrad509 konrad509

13-01-2015

[tex]x^2+9=0\\ x^2=-9\\ x=\sqrt{-9} \vee x=-\sqrt{-9}\\ x=\sqrt{-1\cdot9} \vee x=-\sqrt{-1\cdot9}\\ x=\sqrt{-1}\cdot\sqrt9 \vee x=-\sqrt{-1}\cdot \sqrt9\\ x=i\cdot3 \vee -i\cdot3\\ x=3i \vee x=-3i [/tex]

Answer Link

Otras preguntas

PLEASE HELP !!!!!!!!!!!!

What is socialization? Expalin at least 100 words

Refer to the Newsela article "Real-Life Pet Detective Helps Find Lost Animals." In the Newsela article “Real-Life Pet Detective Helps Find Lost Animals,” which

She said , " I shall do. " ( Indirect speech)

find the midpoint of A and B where A has coordinates (-5,3) and B has coordinates (3, -1)

Identify the relationship between 8 and 6 A-Vertical angles B-Corresponding angles C-Alternate interior Angles D-Linear pair E-Alternate exterior angles

Prior to Shakespeare what did the apostrophe indicate?

I need help please it is very important

Find X in the given figures

the formula a pressure