Question

How do you find the roots, real and imaginary, of `y= x^2 - 2x-121` using the quadratic formula?

Answer 1

`color(brown)({x_1 , x_2 } -> {41, -39})`

Explanation:

41, 39

Factorising gives: `y=(x-41)(x+39)`

Thus the roots are: `color(brown)({x_1 , x_2 } -> {41, -39})`