deemiller deemiller

23-05-2017
Mathematics

contestada

What are the x-intercepts of the quadratic function f(x)=x^2+6x−16
Question 3 options:

8 only

-8 only

-2 and 8

-8 and 2

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kphung76127 kphung76127

23-05-2017

-8 and 2
The expression is factorable and is equal to (x+8)(x-2). Using the zero product property, x=-8 because (-8)+8 equals zero and x=2 because 2-2 equals zero.

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