0=0.25-x^2-2x

Simple and best practice solution for 0=0.25-x^2-2x 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 0=0.25-x^2-2x equation:


Simplifying
0 = 0.25 + -1x2 + -2x

Reorder the terms:
0 = 0.25 + -2x + -1x2

Solving
0 = 0.25 + -2x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + -0.25 = -0.25
-0.25 + 2x + x2 = 0.25 + -2x + -1x2 + -0.25 + 2x + x2

Reorder the terms:
-0.25 + 2x + x2 = 0.25 + -0.25 + -2x + 2x + -1x2 + x2

Combine like terms: 0.25 + -0.25 = 0.00
-0.25 + 2x + x2 = 0.00 + -2x + 2x + -1x2 + x2
-0.25 + 2x + x2 = -2x + 2x + -1x2 + x2

Combine like terms: -2x + 2x = 0
-0.25 + 2x + x2 = 0 + -1x2 + x2
-0.25 + 2x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-0.25 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + 2x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + 2x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + 2x + x2 = 0 + 0.25
2x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
2x + x2 = 0.25

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 = 0.25 + 1

Reorder the terms:
1 + 2x + x2 = 0.25 + 1

Combine like terms: 0.25 + 1 = 1.25
1 + 2x + x2 = 1.25

Factor a perfect square on the left side:
(x + 1)(x + 1) = 1.25

Calculate the square root of the right side: 1.118033989

Break this problem into two subproblems by setting 
(x + 1) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + 1 = 1.118033989 Simplifying x + 1 = 1.118033989 Reorder the terms: 1 + x = 1.118033989 Solving 1 + x = 1.118033989 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 = 1.118033989 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.118033989 + -1 x = 1.118033989 + -1 Combine like terms: 1.118033989 + -1 = 0.118033989 x = 0.118033989 Simplifying x = 0.118033989

Subproblem 2

x + 1 = -1.118033989 Simplifying x + 1 = -1.118033989 Reorder the terms: 1 + x = -1.118033989 Solving 1 + x = -1.118033989 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 = -1.118033989 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.118033989 + -1 x = -1.118033989 + -1 Combine like terms: -1.118033989 + -1 = -2.118033989 x = -2.118033989 Simplifying x = -2.118033989

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.118033989, -2.118033989}

See similar equations:

| (st+st^2-t^3)+(3st^2-ts-3t^3)=0 | | 6x^2-y^2=0 | | (x-y-z)+(5x-3y-7z)+(2z-3x)=0 | | -15a^2+65a+0=0 | | 1+3(x-4)-5(2x-5)=0 | | 7+8/3-10+5x6 | | 1-x+(6x-3)-(8-2x)=0 | | 3h-4+7h-5h-2-h=0 | | (ab^2-a^2b+ab)+(-ab^2-3a^2b+4ab)=0 | | 6n+18=-12 | | 5(7x+6)=5(8x+9) | | x(x-1)-(x-5)(1)=20 | | 3x+4y=12+51 | | (2a-b)-(a+5b-3)=0 | | 7k^2-(5k^2-4k+8)=0 | | 5(2x-4)+(x-7)= | | 5(2c-4)=30 | | 5(2c-3)=30 | | (4a+3b-c)+(5a-c+b)+(4b-6a)=0 | | (3x-7)(x-4)=9 | | 3m-4n+4p-6m-8n-4p=0 | | 5/6x-1/35/2 | | 0.6*0.34= | | x+x=1000 | | 2(x-7)+3=c | | 2(x-7)=x | | x=800 | | 5x-2x=5x+7 | | 4m^2-12m= | | 3a^2b-6ab^2+9ab= | | -400m+4000=0.00 | | 5(2n+4)+2(n+3)=0 |

Equations solver categories