Please help I'm not in a good place rn. Math sucks. Please please help! Hakeem subtracted 8 from a number, then multiplied the difference
by 5. The result was 20. Write and solve an equation to find the
number, x.

8-x•x=20

Step-by-step explanation: i’m not sure if this is the answer sorry if it’s wrong!

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

if x = 1, then the answer is 3.5