Tuesday
July 22, 2014

Homework Help: maths

Posted by rochelle on Sunday, January 28, 2007 at 5:45am.

Show that the equation (1) divided by (x+1) - (x)divided by (x-2)=0 has no real roots

Well, to begin, start with 1/(x+1-x). The x's cancel out because they are opposite signs, so now you have 1/1, or just 1. Then, you are dividing 1 by (x-2). In order for an expression to have roots, you have to be able to plug in the roots for x and get 0 out of the equation. In this equation, you might think that 2 is a root. However, that would make the denominator of the fraction 0, which makes the equation undefined. The only way for an equation that's a fraction to have roots is if the numerator = 0. There is no way to get that if the numerator is 1.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Precalculus - "Show that x^6 - 7x^3 - 8 = 0 has a quadratic form. Then find the ...
Math - Divide. Write in simplest form. 5. 1/3 divided by 2/5=5/6 6. 1/9 divided ...
Maths - q2) a) write the equation cos2x + 8cosx+9=0 in terms of cosx and show ...
Maths - Estimate the following questions (A) 4013 divided by 22 (B) 182x18 ...
Algebra - I'm not sure how to solve these problems. Simplify (3xsquare - 2x)...
Algebra II - Which describes the number and type of roots of the equation x^2 -...
help,math - simplify (x+2)/(x) divided by (x-2)/(3x) (x+2)/(x) divided by (x-2)/...
math - if a 13 by 9 inch brownie pan is divided into 20 equal size brownines, ...
Math - 8 divided by 4-2+5 divided by 3+10 divided by 24 divided by 2+10-16 ...
Math - Write the following decimals as fractions and find the Quotients. 4.5 ...

Search
Members