2x(6+x)=19

Simple and best practice solution for 2x(6+x)=19 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(6+x)=19 equation:


Simplifying
2x(6 + x) = 19
(6 * 2x + x * 2x) = 19
(12x + 2x2) = 19

Solving
12x + 2x2 = 19

Solving for variable 'x'.

Reorder the terms:
-19 + 12x + 2x2 = 19 + -19

Combine like terms: 19 + -19 = 0
-19 + 12x + 2x2 = 0

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

Divide each side by '2'.
-9.5 + 6x + x2 = 0

Move the constant term to the right:

Add '9.5' to each side of the equation.
-9.5 + 6x + 9.5 + x2 = 0 + 9.5

Reorder the terms:
-9.5 + 9.5 + 6x + x2 = 0 + 9.5

Combine like terms: -9.5 + 9.5 = 0.0
0.0 + 6x + x2 = 0 + 9.5
6x + x2 = 0 + 9.5

Combine like terms: 0 + 9.5 = 9.5
6x + x2 = 9.5

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 = 9.5 + 9

Reorder the terms:
9 + 6x + x2 = 9.5 + 9

Combine like terms: 9.5 + 9 = 18.5
9 + 6x + x2 = 18.5

Factor a perfect square on the left side:
(x + 3)(x + 3) = 18.5

Calculate the square root of the right side: 4.301162634

Break this problem into two subproblems by setting 
(x + 3) equal to 4.301162634 and -4.301162634.

Subproblem 1

x + 3 = 4.301162634 Simplifying x + 3 = 4.301162634 Reorder the terms: 3 + x = 4.301162634 Solving 3 + x = 4.301162634 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 = 4.301162634 + -3 Combine like terms: 3 + -3 = 0 0 + x = 4.301162634 + -3 x = 4.301162634 + -3 Combine like terms: 4.301162634 + -3 = 1.301162634 x = 1.301162634 Simplifying x = 1.301162634

Subproblem 2

x + 3 = -4.301162634 Simplifying x + 3 = -4.301162634 Reorder the terms: 3 + x = -4.301162634 Solving 3 + x = -4.301162634 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 = -4.301162634 + -3 Combine like terms: 3 + -3 = 0 0 + x = -4.301162634 + -3 x = -4.301162634 + -3 Combine like terms: -4.301162634 + -3 = -7.301162634 x = -7.301162634 Simplifying x = -7.301162634

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.301162634, -7.301162634}

See similar equations:

| 2x+(4x+14)=20 | | 2(2x)=1 | | 5x+3(4x-3)=15 | | 3.5x+25=12.25+5x | | (9x-3z)(9x+32)= | | 12x+12x+8=56 | | 48327.4302=1.33333333*3.14*r^3 | | 39329.2578=1.3333333*3.14*r^3 | | 87x+18=153y+20 | | 32008.6283=1.3333333*3.14*r^3 | | H=-16t^2-24t+100 | | 4(9+2x)=5x+12 | | 5x^2+10x-4+x^2= | | 15x+18=15x-8 | | 103168.5559=1.3333333*3.14*r^3 | | 5.87x+3.11x-2=10.12 | | 11(x-6)=-8-3 | | 4c^2+49=28c | | 4x+9-3x=11 | | 523.3333=1.333333*3.14*r^3 | | 3(-6x/2+4/2+3)-5=19 | | 5(x+4)=6(x+5) | | 33.4933=1.33333*3.14*h^3 | | 34x+2-9=3 | | 5(3x/5-1/5-2)=70 | | 8x^2-17x-30=0 | | 2x+7=3x-6 | | 0.6-12x+3=-3 | | 9y=7y+10 | | 3b+8=167 | | 3b+8b=167 | | 48+8x-x^2=0 |

Equations solver categories