2x^2=5-2x

Simple and best practice solution for 2x^2=5-2x 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 2x^2=5-2x equation:


Simplifying
2x2 = 5 + -2x

Solving
2x2 = 5 + -2x

Solving for variable 'x'.

Reorder the terms:
-5 + 2x + 2x2 = 5 + -2x + -5 + 2x

Reorder the terms:
-5 + 2x + 2x2 = 5 + -5 + -2x + 2x

Combine like terms: 5 + -5 = 0
-5 + 2x + 2x2 = 0 + -2x + 2x
-5 + 2x + 2x2 = -2x + 2x

Combine like terms: -2x + 2x = 0
-5 + 2x + 2x2 = 0

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

Divide each side by '2'.
-2.5 + x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + x + x2 = 0 + 2.5
x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
x + x2 = 2.5

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.
 + 0.25 + x2 = 2.5 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 2.5 + 0.25

Combine like terms: 2.5 + 0.25 = 2.75
1.25 + x2 = 2.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

x + 0.5 = 1.658312395 Simplifying x + 0.5 = 1.658312395 Reorder the terms: 0.5 + x = 1.658312395 Solving 0.5 + x = 1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.658312395 + -0.5 x = 1.658312395 + -0.5 Combine like terms: 1.658312395 + -0.5 = 1.158312395 x = 1.158312395 Simplifying x = 1.158312395

Subproblem 2

x + 0.5 = -1.658312395 Simplifying x + 0.5 = -1.658312395 Reorder the terms: 0.5 + x = -1.658312395 Solving 0.5 + x = -1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.658312395 + -0.5 x = -1.658312395 + -0.5 Combine like terms: -1.658312395 + -0.5 = -2.158312395 x = -2.158312395 Simplifying x = -2.158312395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.158312395, -2.158312395}

See similar equations:

| 1/4x+1/17 | | 6/z^2-8/z | | x^2+7xy-8y^2=0 | | 8x+6x+2y= | | 30b^6/5b^2 | | -2x^2+45=9x^2-76 | | (X+3)(x+2)=15 | | 10-43/4=x | | 6m^2+7m=3 | | 2x=5y | | 1.2x-3y=-19.5 | | -5y+8x=29 | | 7x^2-40=23 | | 51/7-4=x | | 6g-2forg=1 | | 4x+30=5y | | (4x+9)(x-8)=0 | | 4r^2=16r | | -26+2x=12 | | 5lx-6l=8 | | 5/4t+2/t=5 | | lx-6l-3=0 | | 8m+2=8 | | 9s-5s+2s=18 | | 6(3-2a)=-30 | | 8+4k=-4(-2-k) | | 2x^2-5x+46=0 | | 8h-6h+h+4h-5h=4 | | -1/6*-18 | | 5-3x=ln(500) | | 550=50+25x | | 1/2k+2/k+4=5/k |

Equations solver categories