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

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

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Answer 1 · 2016-01-03T12:38:22

#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})#

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

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