Question

What are the solutions to the equation x^4 - 65x^2=-64

Answer 1

(x^2)^2-65x^2+64=0

(x^2-64)(x^2-1)=0

(x-8)(x+8)(x-1)(x+1)=0

x=8 or x=-8 or x=1 or x=-1

Answer 2

Solve for x by simplifying both sides of the equation, then isolating the variable.

x= −8

x= 8

x= −1

x= 1