Factor these completely. -a^2-2a+80

answer: i think it is (1,-2)

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8