Y = ⁴√(4x + 2) Since the index is even, the radicand has to be greater than or equal to zero. Take whatever is under the radical sign and set it ≥ zero and solve. This will be the domain of the function. 4x + 2 ≥ 0 Subtract 2 from both sides 4x ≥ -2 Divide both sides by 4 x ≥ -2/4 x ≥ -1/2
