## Help (Solving Quadratic Equations By Completing The Square)

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
xxTony13
Posts: 4
Joined: Sat Sep 10, 2011 12:12 pm
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### Help (Solving Quadratic Equations By Completing The Square)

Hello, I'm Lowell Garcia, a 2nd Year High School Student from the Philippines, our math is all about Intermediate Algebra. The reason why I joined to this forum is that I want to have a high grade in our math subject and I'm having a hard time to understand and to catch up with the math lessons which my teacher is giving. I know you guys that you can help me kindly please .

Anyway the lesson that we are currently studying is about How to solve quadratic equations by completing the square. Our teacher had given us a homework and I'm having a hard time to solve these quadratic equations. Can you please solve them for me and please teach me how did you solve it. Kindly please and Thank You.

Homework:

Solve the following quadratic equations by completing the square:

1) $2x^2$+x-3=0

2) $6y^2$-13y+6=0

3) $2a^2$-5a-3=0

stapel_eliz
Posts: 1628
Joined: Mon Dec 08, 2008 4:22 pm
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Can you please solve them for me....
Sorry, but this isn't that kind of place.
...and please teach me how did you solve it.
To learn how to solve by completing the square, please study this lesson.

xxTony13
Posts: 4
Joined: Sat Sep 10, 2011 12:12 pm
Contact:

### Re:

Can you please solve them for me....
Sorry, but this isn't that kind of place.
...and please teach me how did you solve it.
To learn how to solve by completing the square, please study this lesson.
I've already solve it and I already found the values of x but I'm having a hard time checking it. We need the checking so we will have the additional points. What should I do?

stapel_eliz
Posts: 1628
Joined: Mon Dec 08, 2008 4:22 pm
Contact:
I've already solve it and I already found the values of x but I'm having a hard time checking it. We need the checking so we will have the additional points. What should I do?
You do exactly what they showed you for "checking": you plug the answers back into the original equation, and make sure that they work.