Simplify each of the following expressions by combining like terms. be careful to only combine terms that have the same variables and powers 2x2 + 8x – 1 + 5x2 – 2x – 8

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?

This is about circle theorems. someone asap : (

In a column proof the right column states your reasons