3x(x+12)+2x(2x+4)=360

Simple and best practice solution for 3x(x+12)+2x(2x+4)=360 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 3x(x+12)+2x(2x+4)=360 equation:


Simplifying
3x(x + 12) + 2x(2x + 4) = 360

Reorder the terms:
3x(12 + x) + 2x(2x + 4) = 360
(12 * 3x + x * 3x) + 2x(2x + 4) = 360
(36x + 3x2) + 2x(2x + 4) = 360

Reorder the terms:
36x + 3x2 + 2x(4 + 2x) = 360
36x + 3x2 + (4 * 2x + 2x * 2x) = 360
36x + 3x2 + (8x + 4x2) = 360

Reorder the terms:
36x + 8x + 3x2 + 4x2 = 360

Combine like terms: 36x + 8x = 44x
44x + 3x2 + 4x2 = 360

Combine like terms: 3x2 + 4x2 = 7x2
44x + 7x2 = 360

Solving
44x + 7x2 = 360

Solving for variable 'x'.

Reorder the terms:
-360 + 44x + 7x2 = 360 + -360

Combine like terms: 360 + -360 = 0
-360 + 44x + 7x2 = 0

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

Divide each side by '7'.
-51.42857143 + 6.285714286x + x2 = 0

Move the constant term to the right:

Add '51.42857143' to each side of the equation.
-51.42857143 + 6.285714286x + 51.42857143 + x2 = 0 + 51.42857143

Reorder the terms:
-51.42857143 + 51.42857143 + 6.285714286x + x2 = 0 + 51.42857143

Combine like terms: -51.42857143 + 51.42857143 = 0.00000000
0.00000000 + 6.285714286x + x2 = 0 + 51.42857143
6.285714286x + x2 = 0 + 51.42857143

Combine like terms: 0 + 51.42857143 = 51.42857143
6.285714286x + x2 = 51.42857143

The x term is 6.285714286x.  Take half its coefficient (3.142857143).
Square it (9.877551021) and add it to both sides.

Add '9.877551021' to each side of the equation.
6.285714286x + 9.877551021 + x2 = 51.42857143 + 9.877551021

Reorder the terms:
9.877551021 + 6.285714286x + x2 = 51.42857143 + 9.877551021

Combine like terms: 51.42857143 + 9.877551021 = 61.306122451
9.877551021 + 6.285714286x + x2 = 61.306122451

Factor a perfect square on the left side:
(x + 3.142857143)(x + 3.142857143) = 61.306122451

Calculate the square root of the right side: 7.829822632

Break this problem into two subproblems by setting 
(x + 3.142857143) equal to 7.829822632 and -7.829822632.

Subproblem 1

x + 3.142857143 = 7.829822632 Simplifying x + 3.142857143 = 7.829822632 Reorder the terms: 3.142857143 + x = 7.829822632 Solving 3.142857143 + x = 7.829822632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.142857143' to each side of the equation. 3.142857143 + -3.142857143 + x = 7.829822632 + -3.142857143 Combine like terms: 3.142857143 + -3.142857143 = 0.000000000 0.000000000 + x = 7.829822632 + -3.142857143 x = 7.829822632 + -3.142857143 Combine like terms: 7.829822632 + -3.142857143 = 4.686965489 x = 4.686965489 Simplifying x = 4.686965489

Subproblem 2

x + 3.142857143 = -7.829822632 Simplifying x + 3.142857143 = -7.829822632 Reorder the terms: 3.142857143 + x = -7.829822632 Solving 3.142857143 + x = -7.829822632 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.142857143' to each side of the equation. 3.142857143 + -3.142857143 + x = -7.829822632 + -3.142857143 Combine like terms: 3.142857143 + -3.142857143 = 0.000000000 0.000000000 + x = -7.829822632 + -3.142857143 x = -7.829822632 + -3.142857143 Combine like terms: -7.829822632 + -3.142857143 = -10.972679775 x = -10.972679775 Simplifying x = -10.972679775

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.686965489, -10.972679775}

See similar equations:

| x^3+47x-35= | | 2(250-x)+x*4=600 | | -3/b=1 | | x^3+47x-35=0 | | -6=2m | | -3t+8= | | 2X-125=455 | | ((1+2x)/(4))(16) | | 14-4x=9x | | -6(2x-6)+9=-12x+45 | | 7x-9y=-20 | | m/-2=-20 | | f(x)=(x-8)(x+5)(x-2) | | 15+.5(.4)=25+.25(.4) | | 9x-5=9(x-7) | | -12=1y-21 | | 1/4a=1/2(3-a)+(a-4/4) | | 32r^2+8r+2=0 | | (11x-2)=180 | | X+3x=70 | | (11x-2)+(75)=180 | | 1/3+11=29 | | 2a^(5/6)+3a^(5/3) | | -5(x+18)=-42-4x | | 12/9/6/1 | | 2a^5/6+3a^5/3 | | 7k-5=-18 | | 24-106=9 | | 60*1/5 | | 60x1/5 | | 3x^2+3xy= | | 76=4/3x |

Equations solver categories