Hey! Sign in to get help with your study questionsNew here? Join for free to post

Can't use my calculator right

Announcements Posted on
Take our survey to be in with the chance of winning a £50 Amazon voucher or one of 5 x £10 Amazon vouchers 28-05-2016
  1. Offline

    I'm loosing marks due to my dodgy calculating skills.

    Basically I'm trying to use this
    X= -2.667
    On my calculator I have to use x= 0-2.667 otherwise it throws up an error

    Anyway the equation is x^3 -4x^2+3

    The answer should be -6.481 however if I use x as a variable I always get -44.something unless I type it in exactly as this

    (0-x^3-X^2+3) AND X IS set to equal -2.667

    What am I doing wrong. The calculator is a sharp else 516 I got from america
  2. Offline

    Actually ignore this question I made a mistake rushing it. Cheers


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: June 20, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

Don't be a half-term hermit

How to revise this week and still have a life

What's your biggest deadly sin?
Useful resources

Make your revision easier


Maths Forum posting guidelines

Not sure where to post? Read here first


How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups
Study resources
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.