5-x=.5x^2

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


Simplifying
5 + -1x = 0.5x2

Solving
5 + -1x = 0.5x2

Solving for variable 'x'.

Combine like terms: 0.5x2 + -0.5x2 = 0.0
5 + -1x + -0.5x2 = 0.0

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

Divide each side by '-0.5'.
-10 + 2x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 2x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 2x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 2x + x2 = 0 + 10
2x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
2x + x2 = 10

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 = 10 + 1

Reorder the terms:
1 + 2x + x2 = 10 + 1

Combine like terms: 10 + 1 = 11
1 + 2x + x2 = 11

Factor a perfect square on the left side:
(x + 1)(x + 1) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(x + 1) equal to 3.31662479 and -3.31662479.

Subproblem 1

x + 1 = 3.31662479 Simplifying x + 1 = 3.31662479 Reorder the terms: 1 + x = 3.31662479 Solving 1 + x = 3.31662479 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 = 3.31662479 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.31662479 + -1 x = 3.31662479 + -1 Combine like terms: 3.31662479 + -1 = 2.31662479 x = 2.31662479 Simplifying x = 2.31662479

Subproblem 2

x + 1 = -3.31662479 Simplifying x + 1 = -3.31662479 Reorder the terms: 1 + x = -3.31662479 Solving 1 + x = -3.31662479 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 = -3.31662479 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.31662479 + -1 x = -3.31662479 + -1 Combine like terms: -3.31662479 + -1 = -4.31662479 x = -4.31662479 Simplifying x = -4.31662479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.31662479, -4.31662479}

See similar equations:

| x/4-50=12 | | 3cx^2-2x=5 | | 2n/5-6/7=12/35 | | 6/7h=5/6 | | 3d+4=262 | | p+2/7+8p+4/7=6 | | -8+8=x | | 2x^2=8x+24 | | 5r-3=42 | | 36+7b=2b-3(7-8b) | | 8/(p-10)=16/(p-5) | | -15=4a+a | | 2k+7.7=18.7 | | 5r+3=42 | | 4.6c=12.88 | | 7z-1=z+23 | | 1.5y=28.56 | | (d-10)+(d/3)=21 | | -10(x+6)+276=13+23 | | x^2+6xy+8y^6= | | 3h-583=1667 | | 1/2(8z-10)-2/3(9z-6)=(-3) | | 2y=0.125 | | 3h+583=1667 | | g(x)=3x^2-8x+2 | | ((x+7)(5x^2+33x-56))/((25x^2-49)(x^2+8x+7)) | | 7x-3x-8=32 | | 4/7(7/4a) | | -2(3y-8)=2(3+1) | | .2x+14.5=x-2.7 | | 9(x-1)=-3x+111 | | 8+-8= |

Equations solver categories