SubArea: Quadratic equations and inequalitiesLevel: AProject ID: 1003123804Accepted: 1Clonable: 0Easy: 1Choose the equation which has no real roots.\( 4x^2+16=0 \)\( -4x^2+16=0 \)\( 16x^2-4=0 \)\( \sqrt2x^2-2=0 \)
