Question

What is the solution to 2x^2+x+2=0?

Answer 1

use quadratic formula

Answer 2

Which methods of finding solutions / roots of quadratic equations are you familiar with? Quadratic formula? Factoring? Graphing? More? Choose the one most familiar to you and apply it to the given quadratic equation. Please share your work.

Answer 3

Can you take me through the steps?

Answer 4

Please choose a method first. Again, pick a method (or methods) that is most familiar to you.

Answer 5

I'm not really familiar with any of it. But if i had to choose one it would be, Quadratic formula, or factoring.

Answer 6

can this be factored?

Answer 7

I don't know. I think so.

Answer 8

Well as you know we have to find a number that can be added to get x. But we have to but its + so i cannot be factored;. So we do have to use the quadratic formula.

what are the a b c in this equation

Answer 9

A is 2x^2.
B is x
C is 2

Answer 10

?

Answer 11

Ok so we use this formula\[\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]

Answer 12

Can you plug them in?

Answer 13

We need a little housekeeping here:

A is 2x^2.
B is x
C is 2 is not correct. a, b and c do not include the variable, x.

In 2x^2 + x + 2, a is the coefficient of x^2, and is 2.
b is the coeff. of x^1, and is 1.
c is the constant on the far right, and is 2.

In summary, a=2, b=1, c=2.

Proceed, please.

Answer 14

I have no idea. I'm sorry, i just don't understand. Maybe you can help me understand where to put them, so I'll know what to do from now on.

Answer 15

Well read what @mathmale just said.

Answer 16

Thanks mathmale!

Answer 17

Jagr has the quadratic formula correct:

\[y=\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]

Answer 18

He will show you what to do with your a=2, b=1 and c=2.

Answer 19

So i plug in the number with the letter?

Answer 20

Yes, b is x correct? so just plu in -1 for one etc etc

Answer 21

Yes @DarcyRose

Answer 22

How can i get the formula so i can add the numbers?

Answer 23

We sent you the formula, here it is again\[\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]

Answer 24

Like how do i write it on my computer?

Answer 25

"b is x correct" is NOT correct. Please note that b is a constant, and that b = 1.

Answer 26

Oh, go to the equations button or you can just type or draw it :D

Answer 27

Darcy: I'd much prefer y ou write this out on paper, or using the Draw utility (below):

Answer 28

@mjmahmood please let the user figure it out except of doing the work for them -_

Answer 29

I dont even know what he wrote means lol