x^2+68x=136

Simple and best practice solution for x^2+68x=136 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 x^2+68x=136 equation:


Simplifying
x2 + 68x = 136

Reorder the terms:
68x + x2 = 136

Solving
68x + x2 = 136

Solving for variable 'x'.

Reorder the terms:
-136 + 68x + x2 = 136 + -136

Combine like terms: 136 + -136 = 0
-136 + 68x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '136' to each side of the equation.
-136 + 68x + 136 + x2 = 0 + 136

Reorder the terms:
-136 + 136 + 68x + x2 = 0 + 136

Combine like terms: -136 + 136 = 0
0 + 68x + x2 = 0 + 136
68x + x2 = 0 + 136

Combine like terms: 0 + 136 = 136
68x + x2 = 136

The x term is 68x.  Take half its coefficient (34).
Square it (1156) and add it to both sides.

Add '1156' to each side of the equation.
68x + 1156 + x2 = 136 + 1156

Reorder the terms:
1156 + 68x + x2 = 136 + 1156

Combine like terms: 136 + 1156 = 1292
1156 + 68x + x2 = 1292

Factor a perfect square on the left side:
(x + 34)(x + 34) = 1292

Calculate the square root of the right side: 35.944401511

Break this problem into two subproblems by setting 
(x + 34) equal to 35.944401511 and -35.944401511.

Subproblem 1

x + 34 = 35.944401511 Simplifying x + 34 = 35.944401511 Reorder the terms: 34 + x = 35.944401511 Solving 34 + x = 35.944401511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-34' to each side of the equation. 34 + -34 + x = 35.944401511 + -34 Combine like terms: 34 + -34 = 0 0 + x = 35.944401511 + -34 x = 35.944401511 + -34 Combine like terms: 35.944401511 + -34 = 1.944401511 x = 1.944401511 Simplifying x = 1.944401511

Subproblem 2

x + 34 = -35.944401511 Simplifying x + 34 = -35.944401511 Reorder the terms: 34 + x = -35.944401511 Solving 34 + x = -35.944401511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-34' to each side of the equation. 34 + -34 + x = -35.944401511 + -34 Combine like terms: 34 + -34 = 0 0 + x = -35.944401511 + -34 x = -35.944401511 + -34 Combine like terms: -35.944401511 + -34 = -69.944401511 x = -69.944401511 Simplifying x = -69.944401511

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.944401511, -69.944401511}

See similar equations:

| 3k+5m=6k-2l | | 10-2d=3D | | 0=5z-5z | | 32+n=52 | | 7x-15=3x | | 2x^2+7x+4=10x+8 | | 400+30x=60x | | x^2+4x-8=-3 | | 2K+P=R+1 | | 7p+8p-12=50 | | (4x-5)(7x+2)=0 | | 3x=.80 | | 45a^2+9a+36=0 | | 10x^2+162x+656=0 | | (2x+3)(3x+5)=0 | | 27c^2-45c=0 | | 3x-13=x+1# | | 12c^2-6c+6=0 | | 12x^2+92x+96=0 | | 10(w+10)=-6 | | 15m^2-5m+25=0 | | 13+1=3y+29 | | 1/2-4=5 | | (3x+8)+(5x-40)=180 | | 7y=35-7x | | (2x-1)(4-x)=-4 | | -6q^2-3q=0 | | 37-7x=7y | | 13(x+1)=65 | | 4x^2-3x=95 | | (2y^2*x-3)dx+(2y*x^2+4)dy=0 | | 30+4x=30 |

Equations solver categories