A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
what type of equation is this ? Need helps please to identify
anonymous
 one year ago
what type of equation is this ? Need helps please to identify

This Question is Open

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[0=50000x ^{3}2700x ^{2}+10x\] when solving for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it's a cubic. Since it has no constant term one of the solutions is simply x = 0 Now you can divide the equation by x and solve the quadratic equation which results using the quadratic formula. Can you do that?

radar
 one year ago
Best ResponseYou've already chosen the best response.2Is that really permissible? Know that x can be 0, yet you divide by x, isn't division by zero undefined?

radar
 one year ago
Best ResponseYou've already chosen the best response.2Probably meant to say factor the equation such that it looks like this: 10x(20x 1)(250x 1 ) = 0 Now divide both sides by 10 getting: x(20x  1)(250x  1) = 0 Now solve.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You don't divide by zero in any way and there's no need to factor anything. The reason why x = 0 is due to the fact that we can rewrite that equation as: 0*x^3 + 0*x^2 + 0*x+0 = 50000*x^3 + 2700*x^2+10*x^1+0*x The way expressions are equated when dealing with powers of x is by equating each power individually. That's how we have: 0*x^3=50000*x^3. Since 0 can\t be 50000 the only solution to this is 0. Same goes for everything else.

radar
 one year ago
Best ResponseYou've already chosen the best response.2I dont, the message was directed to @JackJordan

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks everyone for your help, big help with my maths work :D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Quick question @radar would it be possible at 10x(20x 1)(250x 1 ) = 0 i divide by 10x instead of just 10 getting (20x  1)(250x  1) = 0 then just equating both to zero getting x= 20, x= 250 because i am not sure how to solve 10(20x  1)(250x  1) = 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh wait never mind i got it, x(20x  1)(250x  1) = 0 i will equate all three terms to zero then i don't have to divide x by zero like you said above(and it has three answers like it should) so x=0,x=20,x=250
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.