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December 20, 2014

December 20, 2014

Posted by **Jake** on Monday, January 9, 2012 at 11:06pm.

I am not sure if this right.

1. solve rational equation

A) (x+3)/(x-1)=2x+1

x+3=(2x+1)(x-1)

x+3=2x^2 - 2x + x - 1

??

- Math -
**Reiny**, Tuesday, January 10, 2012 at 1:00amcollect all like terms to get a quadratic equation

2x^2 - 3x - 4 = 0

use the formula to solve for x

- Math -
**Jake**, Tuesday, January 10, 2012 at 1:11amSo I have to use quadratic formula right? If so, no wonder I don't get the answer

- correction - Math -
**Reiny**, Tuesday, January 10, 2012 at 1:22amI think I added the x terms up incorrectly

should have been

2x^2 - 2x -4 = 0

divide by 2

x^2 - x - 2 = 0

now it factors

x(-2)(x+1) = 0

x = 2 or x = -1

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