2x^2-55x=12

Simple and best practice solution for 2x^2-55x=12 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 2x^2-55x=12 equation:


Simplifying
2x2 + -55x = 12

Reorder the terms:
-55x + 2x2 = 12

Solving
-55x + 2x2 = 12

Solving for variable 'x'.

Reorder the terms:
-12 + -55x + 2x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + -55x + 2x2 = 0

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

Divide each side by '2'.
-6 + -27.5x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -27.5x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -27.5x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -27.5x + x2 = 0 + 6
-27.5x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-27.5x + x2 = 6

The x term is -27.5x.  Take half its coefficient (-13.75).
Square it (189.0625) and add it to both sides.

Add '189.0625' to each side of the equation.
-27.5x + 189.0625 + x2 = 6 + 189.0625

Reorder the terms:
189.0625 + -27.5x + x2 = 6 + 189.0625

Combine like terms: 6 + 189.0625 = 195.0625
189.0625 + -27.5x + x2 = 195.0625

Factor a perfect square on the left side:
(x + -13.75)(x + -13.75) = 195.0625

Calculate the square root of the right side: 13.966477723

Break this problem into two subproblems by setting 
(x + -13.75) equal to 13.966477723 and -13.966477723.

Subproblem 1

x + -13.75 = 13.966477723 Simplifying x + -13.75 = 13.966477723 Reorder the terms: -13.75 + x = 13.966477723 Solving -13.75 + x = 13.966477723 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13.75' to each side of the equation. -13.75 + 13.75 + x = 13.966477723 + 13.75 Combine like terms: -13.75 + 13.75 = 0.00 0.00 + x = 13.966477723 + 13.75 x = 13.966477723 + 13.75 Combine like terms: 13.966477723 + 13.75 = 27.716477723 x = 27.716477723 Simplifying x = 27.716477723

Subproblem 2

x + -13.75 = -13.966477723 Simplifying x + -13.75 = -13.966477723 Reorder the terms: -13.75 + x = -13.966477723 Solving -13.75 + x = -13.966477723 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13.75' to each side of the equation. -13.75 + 13.75 + x = -13.966477723 + 13.75 Combine like terms: -13.75 + 13.75 = 0.00 0.00 + x = -13.966477723 + 13.75 x = -13.966477723 + 13.75 Combine like terms: -13.966477723 + 13.75 = -0.216477723 x = -0.216477723 Simplifying x = -0.216477723

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.716477723, -0.216477723}

See similar equations:

| 6x-5x^2=1 | | 2x-5=4x-19 | | 7y-4=5y-35 | | 6(3+5x)-4=134 | | -8+w=w+7 | | -3y=24x-234 | | M^2+12m+36=25 | | 2-7(y-1)=3(y-2)-5 | | M^2+6m-27=0 | | 10-7x=1-4x | | m+3=45 | | x^3=-y^3 | | 8y=y-21 | | X+3=-27 | | Y-5=9 | | 50-3z=2z+15 | | -55/10= | | 9x^2+74+63=0 | | 9x^2+72x+63=0 | | 31z-x+30y=100 | | 9x^2+74+144=81 | | x+30y+x-31z=100 | | x+30y=100 | | a+669=6666 | | -4=-4x-8 | | c-4c= | | x^4-x+2=0 | | 2z+2x+y=154 | | 0.20y-0.6=0.10+1-0.7y | | 2x+14x=0 | | 2(2x-10)=9x-50 | | 7x+6=4x+30 |

Equations solver categories