basic algebra

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 138
Joined: Mon May 01, 2017 11:56 pm
Thanked: 4 times

basic algebra

by vaibhav101 » Wed May 16, 2018 8:31 am

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

one of the positive roots of a quadratic equation $$ax^2+mx+c=0$$ , where a=1, is twice that of the other. The sum of co-efficient of x and the constant term is 2. if
$$x_1$$ and $$x_2$$ are the roots of this equation , then find the value of $$modulus\ x_1-x_2$$ ?
A 2
B 4
C 6
D 8
E none
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16207
Joined: Mon Dec 08, 2008 6:26 pm
Location: Vancouver, BC
Thanked: 5254 times
Followed by:1268 members
GMAT Score:770

by Brent@GMATPrepNow » Wed May 16, 2018 8:51 am
vaibhav101 wrote:one of the positive roots of a quadratic equation $$ax^2+mx+c=0$$ , where a=1, is twice that of the other. The sum of co-efficient of x and the constant term is 2. if
$$x_1$$ and $$x_2$$ are the roots of this equation , then find the value of $$modulus\ x_1-x_2$$ ?
A 2
B 4
C 6
D 8
E none
What is the source of these questions you've recently posted? They don't seem GMAT--worthy.

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image