2h^2-2h-1=0

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


Simplifying
2h2 + -2h + -1 = 0

Reorder the terms:
-1 + -2h + 2h2 = 0

Solving
-1 + -2h + 2h2 = 0

Solving for variable 'h'.

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

Divide each side by '2'.
-0.5 + -1h + h2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -1h + 0.5 + h2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -1h + h2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -1h + h2 = 0 + 0.5
-1h + h2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-1h + h2 = 0.5

The h term is -1h.  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.
-1h + 0.25 + h2 = 0.5 + 0.25

Reorder the terms:
0.25 + -1h + h2 = 0.5 + 0.25

Combine like terms: 0.5 + 0.25 = 0.75
0.25 + -1h + h2 = 0.75

Factor a perfect square on the left side:
(h + -0.5)(h + -0.5) = 0.75

Calculate the square root of the right side: 0.866025404

Break this problem into two subproblems by setting 
(h + -0.5) equal to 0.866025404 and -0.866025404.

Subproblem 1

h + -0.5 = 0.866025404 Simplifying h + -0.5 = 0.866025404 Reorder the terms: -0.5 + h = 0.866025404 Solving -0.5 + h = 0.866025404 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + h = 0.866025404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + h = 0.866025404 + 0.5 h = 0.866025404 + 0.5 Combine like terms: 0.866025404 + 0.5 = 1.366025404 h = 1.366025404 Simplifying h = 1.366025404

Subproblem 2

h + -0.5 = -0.866025404 Simplifying h + -0.5 = -0.866025404 Reorder the terms: -0.5 + h = -0.866025404 Solving -0.5 + h = -0.866025404 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + h = -0.866025404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + h = -0.866025404 + 0.5 h = -0.866025404 + 0.5 Combine like terms: -0.866025404 + 0.5 = -0.366025404 h = -0.366025404 Simplifying h = -0.366025404

Solution

The solution to the problem is based on the solutions from the subproblems. h = {1.366025404, -0.366025404}

See similar equations:

| 2(6-x)=8 | | -3x-82=8x+50 | | 10r-9=54 | | 3(3x-2)=5x-30 | | 3(k-50)-k=2k+84 | | 2d+97=-d-17 | | -3z-8(2z+y)= | | -57+5x=-x+45 | | 49-k=19 | | 2x-5(x-3)=-4+2x-6 | | -4x^2-6x=192 | | 90=n+n-3 | | 4(2a+30)=5(a+144) | | -7x-19=51 | | 90=x+20+x | | -4(y+2)=-9y+2 | | 8(t-2)+7t=5(3t+3)-9 | | 2(2.5-9)+6b=14 | | 2(4x+3)-2x=4+3x | | 5x-4(-1x-3)=8 | | 1.00x+100=2.50x | | 4x+17+4x-39=90 | | 2b+3(b-2)=9 | | 6x-6+3x=-6 | | 8x-4=6x+x+9 | | 3(2x-15)-x=65 | | 1.00x+100=2.50 | | 7x-9-x=3 | | -32-4x=16 | | 7y-7=3+1 | | -8x-6+2x=12-4x | | 2x+5x+20=2x+3 |

Equations solver categories