h^2-28h=-9

Simple and best practice solution for h^2-28h=-9 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 h^2-28h=-9 equation:


Simplifying
h2 + -28h = -9

Reorder the terms:
-28h + h2 = -9

Solving
-28h + h2 = -9

Solving for variable 'h'.

Reorder the terms:
9 + -28h + h2 = -9 + 9

Combine like terms: -9 + 9 = 0
9 + -28h + h2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -28h + -9 + h2 = 0 + -9

Reorder the terms:
9 + -9 + -28h + h2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -28h + h2 = 0 + -9
-28h + h2 = 0 + -9

Combine like terms: 0 + -9 = -9
-28h + h2 = -9

The h term is -28h.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28h + 196 + h2 = -9 + 196

Reorder the terms:
196 + -28h + h2 = -9 + 196

Combine like terms: -9 + 196 = 187
196 + -28h + h2 = 187

Factor a perfect square on the left side:
(h + -14)(h + -14) = 187

Calculate the square root of the right side: 13.674794331

Break this problem into two subproblems by setting 
(h + -14) equal to 13.674794331 and -13.674794331.

Subproblem 1

h + -14 = 13.674794331 Simplifying h + -14 = 13.674794331 Reorder the terms: -14 + h = 13.674794331 Solving -14 + h = 13.674794331 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + h = 13.674794331 + 14 Combine like terms: -14 + 14 = 0 0 + h = 13.674794331 + 14 h = 13.674794331 + 14 Combine like terms: 13.674794331 + 14 = 27.674794331 h = 27.674794331 Simplifying h = 27.674794331

Subproblem 2

h + -14 = -13.674794331 Simplifying h + -14 = -13.674794331 Reorder the terms: -14 + h = -13.674794331 Solving -14 + h = -13.674794331 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + h = -13.674794331 + 14 Combine like terms: -14 + 14 = 0 0 + h = -13.674794331 + 14 h = -13.674794331 + 14 Combine like terms: -13.674794331 + 14 = 0.325205669 h = 0.325205669 Simplifying h = 0.325205669

Solution

The solution to the problem is based on the solutions from the subproblems. h = {27.674794331, 0.325205669}

See similar equations:

| Sin^2(x)+sin(x)=0 | | 0=3x^2-12x-5 | | 3d^2-9d=39 | | x=6y+18 | | q-4x=9q-3forq | | x*6-19=29 | | 2t+12t=1.2 | | 18/82 | | k^2-26k-17=0 | | (x-6)(x-1)=(2x+1)(x-1) | | 8/86 | | 2+3(4x-6)=8-4(2x+1) | | y^2-11y=-26 | | 8+9n=2n+8 | | 7[3+-1(5+6x)]+-4x=-16+2(1-23x) | | 8.4x-6.6y+5.4=0 | | 1/2ax^2=s | | g(x)=-9x | | 2(1-5x)=3(5x+1) | | -3p^2+84p-75=0 | | 40/82 | | -4(7)+y=-31 | | 4y-7=10y+41 | | 5(x+8)=7x+6-2x+34 | | 2600=6.28r*37+2*3.14*r^2 | | -4x+(-3)=-31 | | s^2+6s-13=0 | | x+2y=16.5 | | 5x-7=3x+21 | | .20x+.45(30)=28.5 | | (6x-5)-6=7(x+3) | | 11=7y+6 |

Equations solver categories