When does that happen? And this one we can just solve. Add 4x squared to both sides, you get 1 is equal to 4x squared. Divide both sides by 4, you get 1 fourth is equal to x squared. And then what x values is this true at? Well, we just take the plus or minus square root of both sides and you get x is equal to plus or minus 1 half. Negative 1 half squared is 1 fourth, positive 1 half squared is 1 fourth.