What is x - 11 = 0 because I don’t know the answer

x = 11

Step-by-step explanation: To solve for x in this equation, we want to get x by itself on the left side of the equation.

Since 11 is being subtracted from x, to get x by itself, we need to add 11 to the left side of the equation. If we add 11 to the left side, we must also add 11 to the right side.

On the left, -11 and +11 cancel out and we're simply left with x. On the right side we have 0 + 11 which is 11 so x = 11.

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this