What equation do you get when you solve z - m = z + bx for x

Aparallelogram has two side lengths of 5 units. three of its sides have equations y = 0, y = 2, y = 2x. find the equation of the fourth side.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Prove that 16^4-2^13-4^5 is divisible by 11.