0 votes
69 views
by (150 points)

1 Answer

+1 vote
by (510 points)
selected by
 
Best answer
a3 + a2 - 21a - 45 = 0

➖ 3a + 2a - 21a - 45 = 0
➖ -16a - 45 = 0
➖ -16a = 45
➖ a = 45 / (-16)
➖ a = ( -45)/16

If represented in the decimal form; a = 2.8125

Hope I could help
Welcome to DoubtSolver Q&A, where you can ask doubts and receive solutions from other members of the community.

Categories

...