1-x-0.5x^2=0

Simple and best practice solution for 1-x-0.5x^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-0.5x^2=0 equation:


Simplifying
1 + -1x + -0.5x2 = 0

Solving
1 + -1x + -0.5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

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

Move the constant term to the right:

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

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

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

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

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 = 2 + 1

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

Combine like terms: 2 + 1 = 3
1 + 2x + x2 = 3

Factor a perfect square on the left side:
(x + 1)(x + 1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + 1) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + 1 = 1.732050808 Simplifying x + 1 = 1.732050808 Reorder the terms: 1 + x = 1.732050808 Solving 1 + x = 1.732050808 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 = 1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.732050808 + -1 x = 1.732050808 + -1 Combine like terms: 1.732050808 + -1 = 0.732050808 x = 0.732050808 Simplifying x = 0.732050808

Subproblem 2

x + 1 = -1.732050808 Simplifying x + 1 = -1.732050808 Reorder the terms: 1 + x = -1.732050808 Solving 1 + x = -1.732050808 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 = -1.732050808 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.732050808 + -1 x = -1.732050808 + -1 Combine like terms: -1.732050808 + -1 = -2.732050808 x = -2.732050808 Simplifying x = -2.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.732050808, -2.732050808}

See similar equations:

| 7=5-2(7c-2) | | x*7=42 | | -9.5y+3.6=-5.9 | | 3n+3=-444 | | 10-13x+4x^2=0 | | 15/8m-11=7/4m+1 | | 2/3(b-6/5)-13/8=45/8-6/5b | | 5+4x=6x+7 | | R+9=12 | | (8c)^2/3 | | 8x-8+x^3-9x^2= | | (3y-7x)(3y+7x)=0 | | f(x)=2x^2+5x-1 | | 0=10x^3+66x^2+14x | | 12x-25=14-33x | | 0.4(4x-1)+0.25(5x-2)=-1 | | 5(x+1)-x=29 | | 8/7×7/10 | | 7x^3-3x^2+10x+10=0 | | (9v+2u)(9v-2u)=0 | | -20+b=-17 | | -2(x+4)=-42 | | 5.5=p/6 | | 2x+4-8=4x | | 4+3=37 | | 3(x-2)+4=-2 | | 93x=60 | | 60=36 | | 5x-(2+c)=4(x+c) | | (x+17)+10=-17 | | 1x+4=5x+2 | | 180=x+x+25+x+15+x+20 |

Equations solver categories