2x^2-12x+36=49

Simple and best practice solution for 2x^2-12x+36=49 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+36=49 equation:


Simplifying
2x2 + -12x + 36 = 49

Reorder the terms:
36 + -12x + 2x2 = 49

Solving
36 + -12x + 2x2 = 49

Solving for variable 'x'.

Reorder the terms:
36 + -49 + -12x + 2x2 = 49 + -49

Combine like terms: 36 + -49 = -13
-13 + -12x + 2x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-13 + -12x + 2x2 = 0

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

Divide each side by '2'.
-6.5 + -6x + x2 = 0

Move the constant term to the right:

Add '6.5' to each side of the equation.
-6.5 + -6x + 6.5 + x2 = 0 + 6.5

Reorder the terms:
-6.5 + 6.5 + -6x + x2 = 0 + 6.5

Combine like terms: -6.5 + 6.5 = 0.0
0.0 + -6x + x2 = 0 + 6.5
-6x + x2 = 0 + 6.5

Combine like terms: 0 + 6.5 = 6.5
-6x + x2 = 6.5

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 = 6.5 + 9

Reorder the terms:
9 + -6x + x2 = 6.5 + 9

Combine like terms: 6.5 + 9 = 15.5
9 + -6x + x2 = 15.5

Factor a perfect square on the left side:
(x + -3)(x + -3) = 15.5

Calculate the square root of the right side: 3.937003937

Break this problem into two subproblems by setting 
(x + -3) equal to 3.937003937 and -3.937003937.

Subproblem 1

x + -3 = 3.937003937 Simplifying x + -3 = 3.937003937 Reorder the terms: -3 + x = 3.937003937 Solving -3 + x = 3.937003937 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 = 3.937003937 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.937003937 + 3 x = 3.937003937 + 3 Combine like terms: 3.937003937 + 3 = 6.937003937 x = 6.937003937 Simplifying x = 6.937003937

Subproblem 2

x + -3 = -3.937003937 Simplifying x + -3 = -3.937003937 Reorder the terms: -3 + x = -3.937003937 Solving -3 + x = -3.937003937 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 = -3.937003937 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.937003937 + 3 x = -3.937003937 + 3 Combine like terms: -3.937003937 + 3 = -0.937003937 x = -0.937003937 Simplifying x = -0.937003937

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.937003937, -0.937003937}

See similar equations:

| 0.3/3.15= | | p^2-17p+21=0 | | 3.15/0.3= | | -a+3-2a=6 | | m^3=9+6m | | 8(6x-11)=80x | | 0.67x+4=0.6x-2 | | x+x-15x=-39+x | | 2x-15x=x-39 | | k+3=-1 | | 17x+85=0 | | 34.99m=39.99m-75 | | 471000+11000x=560000-3000x | | 2(x^3+2)=x(7x+5) | | 2(x^3)=x(7x+5) | | 8(6y+26)+10y=2 | | 11-4y=3+6x | | 9=-3n+2n | | 0.4x+4=.6x-2 | | 3x-22=80 | | 5x-6-2x=-7+3x+1 | | 42+42+x=180 | | 2x+60= | | (Y-12)+(6x-32)=(3y-8)+(2x-20) | | -6y+-2y=72 | | 3x-4-5x=-x-6-x | | 55+90+x=180 | | 6=x^2-x-6 | | y-5y-12=-6 | | f/17=0 | | 6x-4+6x=9x-2+3x-2 | | -5.1=1.7e |

Equations solver categories