Question

Solve for the roots in the equation below. x4 + 3x2 - 4 = 0
100 POINTS!!!

Answer 1

-1,1 would be your roots

hope this helps :)

Answer 2

`\sf \longmapsto \: x^4 + 3x^2 - 4 = 0`

• Factor left side of equation

`\sf \longmapsto(x+1)(x−1)(x^2+4)=0`

• Set factors equal to 0

`\sf \longmapsto \: x+1=0 or x−1=0  \: or \:  x {}^(2) +4=0`

• We have two possible solutions

`\sf \longmapsto \: x = - 1`

OR

`\sf \longmapsto \: x = 1`