Inzanity Inzanity

23-04-2018
Mathematics

contestada

Which is a zero of the function defined by
2x² + x - 45?

A. -9
B. -5
C. 5
D. 9

Show some work

Respuesta :

MrGumby MrGumby

24-04-2018

B.

You can get this by using the quadratic equation, which I listed below.

[tex] \frac{-b +/- \sqrt{ b^{2} -4ac} }{2a} [/tex]

With a = 2, b = 1, c = -45

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