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

Simple and best practice solution for 2(x^2)+4x+1=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 2(x^2)+4x+1=0 equation:


Simplifying
2(x2) + 4x + 1 = 0

Reorder the terms:
1 + 4x + 2x2 = 0

Solving
1 + 4x + 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 + 2x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 2x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 2x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 2x + x2 = 0 + -0.5
2x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
2x + x2 = -0.5

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -0.5 + 1

Reorder the terms:
1 + 2x + x2 = -0.5 + 1

Combine like terms: -0.5 + 1 = 0.5
1 + 2x + x2 = 0.5

Factor a perfect square on the left side:
(x + 1)(x + 1) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(x + 1) equal to 0.707106781 and -0.707106781.

Subproblem 1

x + 1 = 0.707106781 Simplifying x + 1 = 0.707106781 Reorder the terms: 1 + x = 0.707106781 Solving 1 + x = 0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0.707106781 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0.707106781 + -1 x = 0.707106781 + -1 Combine like terms: 0.707106781 + -1 = -0.292893219 x = -0.292893219 Simplifying x = -0.292893219

Subproblem 2

x + 1 = -0.707106781 Simplifying x + 1 = -0.707106781 Reorder the terms: 1 + x = -0.707106781 Solving 1 + x = -0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -0.707106781 + -1 Combine like terms: 1 + -1 = 0 0 + x = -0.707106781 + -1 x = -0.707106781 + -1 Combine like terms: -0.707106781 + -1 = -1.707106781 x = -1.707106781 Simplifying x = -1.707106781

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.292893219, -1.707106781}

See similar equations:

| 40x+32-20x=-12 | | 5e+6=21 | | 2d-9=27 | | 4c-3=21 | | -8x-4(32)=32 | | 3x*1= | | -8(32)-4y=32 | | 24-24x+12x=3 | | 10-8x=34-22x | | 2x^2-5y+2=0 | | 2(x^2)-5y+2=0 | | -58=5(4x-2)+4x | | 8(4+6x)=112 | | (3x-1)(x+1)= | | H-4+3h= | | (3x-1)(x+1)=(2x-1)(x+3) | | 5v+14=89 | | P=12+(5d)/11 | | -5x+4(-20)=-20 | | -5(-20)+4y=-20 | | 26/10 | | 6x-9(-54)=-54 | | 6(-54)-9y=-54 | | 3ay+xy=0 | | ay+xy=0 | | 2e+9= | | -93-8x=-10x+15 | | 12x+3(x+7)=0 | | 48x=8x^2 | | 7x+10=6x+8 | | 3x^2+5=113 | | 4x+8=2x+36 |

Equations solver categories