Anything clues or answers would help sm

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Graph y = -|x| + 2. click on the graph until the correct one appears.

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf