2x^2-12x-63=0

Simple and best practice solution for 2x^2-12x-63=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 2x^2-12x-63=0 equation:


Simplifying
2x2 + -12x + -63 = 0

Reorder the terms:
-63 + -12x + 2x2 = 0

Solving
-63 + -12x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-31.5 + -6x + x2 = 0

Move the constant term to the right:

Add '31.5' to each side of the equation.
-31.5 + -6x + 31.5 + x2 = 0 + 31.5

Reorder the terms:
-31.5 + 31.5 + -6x + x2 = 0 + 31.5

Combine like terms: -31.5 + 31.5 = 0.0
0.0 + -6x + x2 = 0 + 31.5
-6x + x2 = 0 + 31.5

Combine like terms: 0 + 31.5 = 31.5
-6x + x2 = 31.5

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 31.5 + 9

Reorder the terms:
9 + -6x + x2 = 31.5 + 9

Combine like terms: 31.5 + 9 = 40.5
9 + -6x + x2 = 40.5

Factor a perfect square on the left side:
(x + -3)(x + -3) = 40.5

Calculate the square root of the right side: 6.363961031

Break this problem into two subproblems by setting 
(x + -3) equal to 6.363961031 and -6.363961031.

Subproblem 1

x + -3 = 6.363961031 Simplifying x + -3 = 6.363961031 Reorder the terms: -3 + x = 6.363961031 Solving -3 + x = 6.363961031 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 6.363961031 + 3 Combine like terms: -3 + 3 = 0 0 + x = 6.363961031 + 3 x = 6.363961031 + 3 Combine like terms: 6.363961031 + 3 = 9.363961031 x = 9.363961031 Simplifying x = 9.363961031

Subproblem 2

x + -3 = -6.363961031 Simplifying x + -3 = -6.363961031 Reorder the terms: -3 + x = -6.363961031 Solving -3 + x = -6.363961031 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -6.363961031 + 3 Combine like terms: -3 + 3 = 0 0 + x = -6.363961031 + 3 x = -6.363961031 + 3 Combine like terms: -6.363961031 + 3 = -3.363961031 x = -3.363961031 Simplifying x = -3.363961031

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.363961031, -3.363961031}

See similar equations:

| x+2(1-x)=10-3x | | 5b-10=25 | | n^2-21n+20= | | 3G-12=-3 | | y^3-5y=0 | | -11+3/2 | | (x+2)/3=8/9 | | 12-x/3=7 | | (7/2)x-(1-x/2)=4 | | Log(1-x)=3 | | 3/4x+4=10 | | An=3n+4n | | 3a+(4b+3)i=9-6i | | 9x^2-72xy+21x-84y+144y^2-8=0 | | x-39=-44 | | 4.6-8.8=7 | | 2y+4-9=16 | | -m/6+6=41 | | (-2)+x=-31 | | An=7n+11 | | 12-2(x^2-2x*1+1)=4(x-2)-(x-3)(2x-5) | | 17.5=7w | | (-11)+x=-28 | | X-1/4(2x+15)=3/4 | | -3(y-1)+12=x | | 5x+15=9x+4 | | 7+4a=2a | | 3x+25=15x-93 | | 7(x+2)-5x= | | 3x+7y=52 | | 2/510/3 | | 3=z-5 |

Equations solver categories