2.1. El factor común en (+)(+)−(+)+(+) a) (2+1)2
b) (2+1)5
c) (2+1)2
d) 7(2+1)3
2.2. El factor común en el polinomio +− es:
a) 62
b) 1223
c) 18
d) 3044

Select the correct answer. given: ∆abc with prove: statement reason 1. given 2. ∠cab ≅ ∠edb ∠acb ≅ ∠deb if two parallel lines are cut by a transversal, the corresponding angles are congruent. 3. ∆abc ~ ∆dbe aa criterion for similarity 4. corresponding sides of similar triangles are proportional. 5. ab = ad + db cb = ce + eb segment addition 6. substitution property of equality 7. division 8. subtraction property of equality what is the missing statement in the proof? scroll down to see the entire proof.