How do
multiply out and simplify 10(2x-1)-20x?

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Select the quadratic that has root x = 8 and x = -5