2h^2+5h-4=0

Simple and best practice solution for 2h^2+5h-4=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+5h-4=0 equation:


Simplifying
2h2 + 5h + -4 = 0

Reorder the terms:
-4 + 5h + 2h2 = 0

Solving
-4 + 5h + 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'.
-2 + 2.5h + h2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 2.5h + 2 + h2 = 0 + 2

Reorder the terms:
-2 + 2 + 2.5h + h2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 2.5h + h2 = 0 + 2
2.5h + h2 = 0 + 2

Combine like terms: 0 + 2 = 2
2.5h + h2 = 2

The h term is 2.5h.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5h + 1.5625 + h2 = 2 + 1.5625

Reorder the terms:
1.5625 + 2.5h + h2 = 2 + 1.5625

Combine like terms: 2 + 1.5625 = 3.5625
1.5625 + 2.5h + h2 = 3.5625

Factor a perfect square on the left side:
(h + 1.25)(h + 1.25) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(h + 1.25) equal to 1.887458609 and -1.887458609.

Subproblem 1

h + 1.25 = 1.887458609 Simplifying h + 1.25 = 1.887458609 Reorder the terms: 1.25 + h = 1.887458609 Solving 1.25 + h = 1.887458609 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + h = 1.887458609 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + h = 1.887458609 + -1.25 h = 1.887458609 + -1.25 Combine like terms: 1.887458609 + -1.25 = 0.637458609 h = 0.637458609 Simplifying h = 0.637458609

Subproblem 2

h + 1.25 = -1.887458609 Simplifying h + 1.25 = -1.887458609 Reorder the terms: 1.25 + h = -1.887458609 Solving 1.25 + h = -1.887458609 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + h = -1.887458609 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + h = -1.887458609 + -1.25 h = -1.887458609 + -1.25 Combine like terms: -1.887458609 + -1.25 = -3.137458609 h = -3.137458609 Simplifying h = -3.137458609

Solution

The solution to the problem is based on the solutions from the subproblems. h = {0.637458609, -3.137458609}

See similar equations:

| 9=81r | | 2.1x+0.6=-1.4x+6.9 | | 3g+3z=r | | 11x+15x-9+3=-7x+3-9 | | 3/4a=5/7 | | X=log(-4.75) | | 30x+7.50=y | | 2g^2+11g+9=9 | | 2v+11+2v+11+2v+11+2v+11=76 | | 8-1/3x=1/9 | | 2x+35=-5x-7 | | X+(x+3)+(x-18)=180 | | 24x-8x^2=0 | | y=n-x | | x^2+38=23 | | 6(x+1)=60 | | 6(8)-5+2(8-2)= | | 8(8)-8= | | 6f=h | | .9x=.5 | | -1/3u-4/3u | | 16a+20b+8= | | 79=4x+35 | | 1/2p=2 | | -3w^2+29w-40=0 | | X=-.5+1.5y | | 6m-6=6m-6 | | 8+2x=5x-15 | | 15x-3(2x-6)=5x-6 | | 6(1)-5+2(1-2)= | | 17+-3(2n+-5)=30-6n | | (x-4)(x+8)=13 |

Equations solver categories