isomkiley isomkiley
  • 24-03-2020
  • Mathematics
contestada

Find the roots of the equation below.
7х2 + 1 = 0
o
o
o
o

Find the roots of the equation below 7х2 1 0 o o o o class=

Respuesta :

jazminemcfarland326
jazminemcfarland326 jazminemcfarland326
  • 24-03-2020

Roots of the equation 7x²+1=0: 

7x²+1=0, now we transfer 1 to the right:

7x²=-1, divide by 7:

x²=-1/7, take the square root:

x=+/-√(-1/7)=+/-(i/√7), now we multiply the numerator and the denominator by √7, and we see that we have two complex roots:

x=+/-(i√7)/(√7*√7)=+/-(i√7)/7

We have two possible roots:

x₁=+(i√7)/7 and x₂=-(i√7)/7, so the correct answer is the last one on the image:

x₁,₂=+/-(i√7)/7.

Click to let others know, how helpful is it

4.0

Answer Link

Otras preguntas

what do the native americans bring to the colonists?
como se ordena la palabra ecrfinaine
A 5-pound bag of apples cost $3.50. Use that rate, to complete the table to identify equivalent ratios, and then answer the questions. Apples *? 5 ? 15 Cost 0
Which explorer sailed for french?
What is the value of 37,123,745
I'm not understanding this question please help ?
Please help me factor x^3 - x^2 -4x +4
The combination of chemical reactions through which an organism builds up or breaks down materials
Biologists have discovered ways ______ can reduce the symptoms of diseases. a.) weather b.) diet c.) energy d.) water
A historian is studying urban history in Chicago in the early 1900s. She is studying the population changes and the activities that people did in their everyday