2h^2-h-8=0

Simple and best practice solution for 2h^2-h-8=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-h-8=0 equation:


Simplifying
2h2 + -1h + -8 = 0

Reorder the terms:
-8 + -1h + 2h2 = 0

Solving
-8 + -1h + 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'.
-4 + -0.5h + h2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -0.5h + 4 + h2 = 0 + 4

Reorder the terms:
-4 + 4 + -0.5h + h2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -0.5h + h2 = 0 + 4
-0.5h + h2 = 0 + 4

Combine like terms: 0 + 4 = 4
-0.5h + h2 = 4

The h term is -0.5h.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5h + 0.0625 + h2 = 4 + 0.0625

Reorder the terms:
0.0625 + -0.5h + h2 = 4 + 0.0625

Combine like terms: 4 + 0.0625 = 4.0625
0.0625 + -0.5h + h2 = 4.0625

Factor a perfect square on the left side:
(h + -0.25)(h + -0.25) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(h + -0.25) equal to 2.015564437 and -2.015564437.

Subproblem 1

h + -0.25 = 2.015564437 Simplifying h + -0.25 = 2.015564437 Reorder the terms: -0.25 + h = 2.015564437 Solving -0.25 + h = 2.015564437 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + h = 2.015564437 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + h = 2.015564437 + 0.25 h = 2.015564437 + 0.25 Combine like terms: 2.015564437 + 0.25 = 2.265564437 h = 2.265564437 Simplifying h = 2.265564437

Subproblem 2

h + -0.25 = -2.015564437 Simplifying h + -0.25 = -2.015564437 Reorder the terms: -0.25 + h = -2.015564437 Solving -0.25 + h = -2.015564437 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + h = -2.015564437 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + h = -2.015564437 + 0.25 h = -2.015564437 + 0.25 Combine like terms: -2.015564437 + 0.25 = -1.765564437 h = -1.765564437 Simplifying h = -1.765564437

Solution

The solution to the problem is based on the solutions from the subproblems. h = {2.265564437, -1.765564437}

See similar equations:

| 0-0(x+0)=0 | | c^2-13c+28=0 | | 2-3(x+9)=23 | | 5x-8=3x-5 | | (a^3-2a^2)(3a^2-4a^3)= | | -84= | | -48+6x+4x=180 | | 120=5c | | 3d+14=21 | | 40y^2-2y-2= | | 15-2yi=3x-18i | | 6x^2-xy-15y^2=0 | | a^4-10a^2b^2+16b^4=0 | | 4+2(z-2)=-3z+2 | | 18+5x=-12x | | n^2-16+64=0 | | 3(0)-3=-2 | | 1.5d+3.2=2.5 | | 18-5x=-12x-1 | | 4(5+x)+x+6= | | 200=168 | | -41=-4k+3 | | 2x-40x^2=0 | | x+8+5x+22=180 | | x-.2x=8 | | 7+23= | | 8x-4xy=3 | | -216x^3-1=0 | | -216x^3=0-1 | | 3(n+5)+2=25 | | -3x+6(x+14)=9 | | 15=3-2g |

Equations solver categories