Which equation has the components of 0 = x2 - 9x - 20 inserted into the quadratic formula correctly?

O

x

= - 9 V (-9) 2 - 4 (1) (-20)

x = 91V ( - 9) 2 - 4 (1) (20)

2 (1)

x = 9: (-92 - 4 (1) (-20).

2 (1)

x = - 9 1 (-9) 2 + 4 (1) (-20)

2 (1)

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