Determine if the statement is always sometimes or never true. an exterior angle of a triangle is 180 degrees

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°