Question

Use the technique of completing the square to transform the equation into the form (x+c)^2=a

5x^2 + 20x -20=0

Answer 1

1. Add 20 to both sides.

Answer 2

Ok, I added 20 to both sides

Answer 3

Post your result here so I can keep track.

Answer 4

The reason why I'm asking you to post your steps here is so that if you make a mistake at any time, I can easily point it out for you.

Answer 5

Ok, so when I added 20 to both sides I got 5x^2 + 20x=20. So then I think I divide by 5
So my new equation is x^2+ 4x=20?

Answer 6

You divide BOTH sides by 5

Answer 7

Sorry I knew that! So its x^2 +4x=4

Answer 8

If you perform an operation on one side, you have to perform an operation on the other side.

Answer 9

Yes, that is correct now

Answer 10

Okay, so now what you have to do is add (b/2)^2 to both sides. In this case, b = 4, so add
(4/2)^2 to both sides.

Answer 11

Sorry im confused, math is hard for me

Answer 12

Basically (4/2)^2 = (2)^2 = 4

So essentially I am asking you to add 4 to both sides.

Answer 13

@cnh are you still here?

Answer 14

Sorry, I am

Answer 15

so x^2=24?

Answer 16

How did you get from adding 4 to both sides, to that?

Answer 17

You had:

x^2 +4x=4

I asked you to add 4 to both sides.