Hola a todos quiero seguidores y amigos si porfas ​

Which of the binomials below is a factor of this trinominal? x^2-13+30

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?

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2