(Answered) Find the roots of each of the following functions that is

Economics

Find the roots of each of the following functions (that is find the two X values making Y = 0). This skill may be useful in assignment 11. Example: Y= 3X² -11X +6 is the product of (3X -2)(X - 3). If you let Y = 3X-2 then X = 2/3 will make Y = 0. If you let Y = X -3 then X = 3 will make Y = 0. Thus both X = 2/3 and X = 3 are roots. Show the algebra involved.

a. Y = 6X² +2X -4. The two roots are X = ______ and X = ______.

b. Y = -20X² +13X +15. The two roots are X = ______ and X = ______.

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