please solve (1 Viewer)

[brownie46]

y4-15y²-44=0 find y

 

[jgaw99]

Wrong thread - but here goes

you should quadratic formula to get a solution for y^2. Then discard the negative solution.
Take positive/negative square root for solutions for y.

 

[Zen2613]

y4-15y²-44=0 find y

Assuming you meant y^4 - 15y^2 - 44 = 0

Solutions for y: y = (+/-)sqrt((15+sqrt(401))/2)
y = (+/-)i*sqrt((sqrt(401)-15)/2)
Where sqrt(x) is the square root function and i is the imaginary unit.

#4Unit