1+x+2x^2=0

Simple and best practice solution for 1+x+2x^2=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 1+x+2x^2=0 equation:


Simplifying
1 + x + 2x2 = 0

Solving
1 + x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
0.5 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 0.5x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 0.5x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 0.5x + x2 = 0 + -0.5
0.5x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
0.5x + x2 = -0.5

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5x + 0.25 + x2 = -0.5 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = -0.5 + 0.25

Combine like terms: -0.5 + 0.25 = -0.25
0.25 + 0.5x + x2 = -0.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -2x-8x=-6(4x+7)-4(8x+1) | | 1*3+x*1=x*2 | | 1.2*6= | | 2(3x+4)-3=-13 | | -5(396t)=100014 | | -5(396t)=100013 | | -5(396t)=100012 | | -5(396t)=100011 | | -5(396t)=100010 | | 4(6x+8)=-12 | | 16n^2=36n+36 | | -5(396t)=100009 | | (6x)+15=12 | | -5(396t)=100004 | | n-1=4+n | | X-3(-3)=-3 | | -5(396t)=100001 | | -5(396t)=10000 | | 2x+-3=8 | | 7e^4x=1295 | | 1-7x+2x-2=-3(-6x+7)+2(1-7x) | | (x)+9=-7 | | -5(396t)=100000 | | -5(396t)=900 | | -5(396t)=200 | | -5(396t)=100 | | -5(396t)=56 | | 3x-12/x^2-3x-4 | | -5(396t)=57 | | 5(x+4)=8x-1 | | x=7-3y | | -5(396t)=78 |

Equations solver categories