Monday

September 22, 2014

September 22, 2014

Posted by **G** on Friday, May 23, 2008 at 9:04pm.

2X^2+2X-4=0

The book says the answer is -2,1.

I got the -2,1 but not in the order of

-2,1.

I used FOIL to solve. When I use -2,1 I don't can not solve. When I use

1,-2. I can solve.

I am not clear.

- Algebra -
**Doug**, Friday, May 23, 2008 at 9:47pmThe order is not important. The answer is x=-2 or x=1

Verify by substituting for x

2(-2)^2+2(-2)-4=0

8-4-4=0

0=0

2(1)^2+2(1)-4=0

2+2-4=0

0=0

**Answer this Question**

**Related Questions**

Algebra - I am solving for sytems of equations using the elimination method. ...

Algebra Quadratic Equations - I am trying to define the different appraoches to ...

Algebra - Solving radical Equations Using \/ for radical sign 6-4\/y=-11 Book ...

Algebra - I am solving sytems of equations algrbraically. I have tried several ...

Algebra - Solving quadriatic equaitons using factoring. X^2-6=30-3x^2 The answer...

Algebra - Solving word problem using quadratic equation. The book says the ...

Advanced Algebra-Factoring - Question : 2x^7-32x^3 When I factored it I got: 2x^...

algebra - I just need a quick check before I hand in my work if you would......

algebra 1 - Got a test tomorrow... Say you have a system of equations (linear), ...

algebra - I have a few problems I need you to take a look at and tell me if I ...