Can someone please tell us why we are stuck using (*) at 26:32 to find the value of y? If I substitute 2 for x, y^2 will have 2 values, 0.73205 and -2.73205. We can discard -2.73205 as that t=will give imaginary values for y. Can someone please tell me where I am going wrong? Many thanks in advance.####[[' x,', 'Mathematical_Related_Concept', 'NEU'], ['y', 'Mathematical_Related_Concept', 'NEU'], ['t', 'Mathematical_Related_Concept', 'NEU'], ['y', 'Mathematical_Related_Concept', 'NEU']]