A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
a^2 – 5a – 20 factor completely
anonymous
 3 years ago
a^2 – 5a – 20 factor completely

This Question is Closed

vishweshshrimali5
 3 years ago
Best ResponseYou've already chosen the best response.0No not this time I think you have copied your question incorrectly it should be a^2  a  20 right ?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0no it has 5 in this one

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i see it's prime so how do i show work

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0is the answer \[5+\sqrt{105}/2,5\sqrt{105}/2\]

precal
 3 years ago
Best ResponseYou've already chosen the best response.0when it is prime, we just state "prime" and do not attempt to factor. Now if it said, solve then we solve using the quadratic formula

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0no because it's prime

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but it can be solved by discriminant method

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0it just said factor and show work so i don't think i have to use that .

precal
 3 years ago
Best ResponseYou've already chosen the best response.0correct, if the instructions were to factor write "prime" if the instructions were to solve then use the quadratic formula

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0It's prime! Applying quadratic formula, we get: a^2 – 5*a – 20 = 0 a = 1, b =  5, c =  20 b^2  4*a*c = 25  4*1*(  20) = 105 a1 = (  (  5) + sqrt(105))/2 = 5/2 + (1/2)*sqrt(105) a2 = 5/2  (1/2)*sqrt(105)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.