What is -6x - 10(x - 4)

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so