Rewrite the equation by completing the square.
x^2-8x -51= 0

x = 5.1

Step-by-step explanation:

okay start with simplifying x^2 in the equation, x * x = 2x

2x + 8x - 51 = 0

simplify by adding the 2x with the 8x, giving us   10x - 51 = 0

now lets add 51 to both sides, 10x = 51

divide both sides by 10, x = 5.1

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

answer is : muchas/tipicas

have a nice day!

~recklesschicken