2x-2x^2=0.28

Simple and best practice solution for 2x-2x^2=0.28 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-2x^2=0.28 equation:


Simplifying
2x + -2x2 = 0.28

Solving
2x + -2x2 = 0.28

Solving for variable 'x'.

Reorder the terms:
-0.28 + 2x + -2x2 = 0.28 + -0.28

Combine like terms: 0.28 + -0.28 = 0.00
-0.28 + 2x + -2x2 = 0.00

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

Divide each side by '-2'.
0.14 + -1x + x2 = 0.00

Move the constant term to the right:

Add '-0.14' to each side of the equation.
0.14 + -1x + -0.14 + x2 = 0.00 + -0.14

Reorder the terms:
0.14 + -0.14 + -1x + x2 = 0.00 + -0.14

Combine like terms: 0.14 + -0.14 = 0.00
0.00 + -1x + x2 = 0.00 + -0.14
-1x + x2 = 0.00 + -0.14

Combine like terms: 0.00 + -0.14 = -0.14
-1x + x2 = -0.14

The x term is -1x.  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.
-1x + 0.25 + x2 = -0.14 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -0.14 + 0.25

Combine like terms: -0.14 + 0.25 = 0.11
0.25 + -1x + x2 = 0.11

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 0.11

Calculate the square root of the right side: 0.331662479

Break this problem into two subproblems by setting 
(x + -0.5) equal to 0.331662479 and -0.331662479.

Subproblem 1

x + -0.5 = 0.331662479 Simplifying x + -0.5 = 0.331662479 Reorder the terms: -0.5 + x = 0.331662479 Solving -0.5 + x = 0.331662479 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 = 0.331662479 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 0.331662479 + 0.5 x = 0.331662479 + 0.5 Combine like terms: 0.331662479 + 0.5 = 0.831662479 x = 0.831662479 Simplifying x = 0.831662479

Subproblem 2

x + -0.5 = -0.331662479 Simplifying x + -0.5 = -0.331662479 Reorder the terms: -0.5 + x = -0.331662479 Solving -0.5 + x = -0.331662479 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 = -0.331662479 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -0.331662479 + 0.5 x = -0.331662479 + 0.5 Combine like terms: -0.331662479 + 0.5 = 0.168337521 x = 0.168337521 Simplifying x = 0.168337521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.831662479, 0.168337521}

See similar equations:

| 3m+n=2m-n | | 11y-45=20-2y | | (2x+5)-(x-7)=7 | | 33+15x=8x-9 | | x=3cospi*cost^2 | | 7x-3/4 | | x=1+3cos(pi*t^2/3) | | -18-2x=9-9x | | 10x+8=4+10 | | -199-8x=9x+17 | | (x-3)/4+(x-2)/2 | | 159-6=5x+5 | | xy+z=w | | 3x+31=21x-41 | | 8x-22=26 | | 12-3m=m+4 | | 80-(3x)=(5x+8) | | 3x+31=21x-49 | | 3x+31=12x-24 | | 10-10/10+10 | | m/5=m/8+9 | | x-1/2=9/8 | | (7/3)/(13/3) | | (6+2x-3-6x+1)/2 | | (1+64/9)/(1-8/3) | | 1+64/9 | | 1x+4=x+3 | | 7-5x=6x-4 | | 5x+1=5+3x | | -(-5w-v)-4(-3v+4w)= | | 7x+8=2x+38 | | 8x-21=0.5x+3 |

Equations solver categories