80 pointssolve for x. use the completeing the square method. x^2+8x=7

The correct answer is C.

Step-by-step explanation:

⇒

⇒ which is also,

⇒ So, is a square root of 23.

⇒ Then, it could be positive or negative one:

So that's why the answer would be C.

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(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

the function makes a strait line horizontally with no x intercept but a y intercept at 9.