How do you find the measure of each angle indicated ?

1. what is the measure of ∠abc? what is the measure of ∠abd?

Find the root(s) of f (x) = (x- 6)2(x + 2)2.

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: