(3x-2)(x+2)=18x+4

Simple and best practice solution for (3x-2)(x+2)=18x+4 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-2)(x+2)=18x+4 equation:


Simplifying
(3x + -2)(x + 2) = 18x + 4

Reorder the terms:
(-2 + 3x)(x + 2) = 18x + 4

Reorder the terms:
(-2 + 3x)(2 + x) = 18x + 4

Multiply (-2 + 3x) * (2 + x)
(-2(2 + x) + 3x * (2 + x)) = 18x + 4
((2 * -2 + x * -2) + 3x * (2 + x)) = 18x + 4
((-4 + -2x) + 3x * (2 + x)) = 18x + 4
(-4 + -2x + (2 * 3x + x * 3x)) = 18x + 4
(-4 + -2x + (6x + 3x2)) = 18x + 4

Combine like terms: -2x + 6x = 4x
(-4 + 4x + 3x2) = 18x + 4

Reorder the terms:
-4 + 4x + 3x2 = 4 + 18x

Solving
-4 + 4x + 3x2 = 4 + 18x

Solving for variable 'x'.

Reorder the terms:
-4 + -4 + 4x + -18x + 3x2 = 4 + 18x + -4 + -18x

Combine like terms: -4 + -4 = -8
-8 + 4x + -18x + 3x2 = 4 + 18x + -4 + -18x

Combine like terms: 4x + -18x = -14x
-8 + -14x + 3x2 = 4 + 18x + -4 + -18x

Reorder the terms:
-8 + -14x + 3x2 = 4 + -4 + 18x + -18x

Combine like terms: 4 + -4 = 0
-8 + -14x + 3x2 = 0 + 18x + -18x
-8 + -14x + 3x2 = 18x + -18x

Combine like terms: 18x + -18x = 0
-8 + -14x + 3x2 = 0

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

Divide each side by '3'.
-2.666666667 + -4.666666667x + x2 = 0

Move the constant term to the right:

Add '2.666666667' to each side of the equation.
-2.666666667 + -4.666666667x + 2.666666667 + x2 = 0 + 2.666666667

Reorder the terms:
-2.666666667 + 2.666666667 + -4.666666667x + x2 = 0 + 2.666666667

Combine like terms: -2.666666667 + 2.666666667 = 0.000000000
0.000000000 + -4.666666667x + x2 = 0 + 2.666666667
-4.666666667x + x2 = 0 + 2.666666667

Combine like terms: 0 + 2.666666667 = 2.666666667
-4.666666667x + x2 = 2.666666667

The x term is -4.666666667x.  Take half its coefficient (-2.333333334).
Square it (5.444444448) and add it to both sides.

Add '5.444444448' to each side of the equation.
-4.666666667x + 5.444444448 + x2 = 2.666666667 + 5.444444448

Reorder the terms:
5.444444448 + -4.666666667x + x2 = 2.666666667 + 5.444444448

Combine like terms: 2.666666667 + 5.444444448 = 8.111111115
5.444444448 + -4.666666667x + x2 = 8.111111115

Factor a perfect square on the left side:
(x + -2.333333334)(x + -2.333333334) = 8.111111115

Calculate the square root of the right side: 2.848001249

Break this problem into two subproblems by setting 
(x + -2.333333334) equal to 2.848001249 and -2.848001249.

Subproblem 1

x + -2.333333334 = 2.848001249 Simplifying x + -2.333333334 = 2.848001249 Reorder the terms: -2.333333334 + x = 2.848001249 Solving -2.333333334 + x = 2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = 2.848001249 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = 2.848001249 + 2.333333334 x = 2.848001249 + 2.333333334 Combine like terms: 2.848001249 + 2.333333334 = 5.181334583 x = 5.181334583 Simplifying x = 5.181334583

Subproblem 2

x + -2.333333334 = -2.848001249 Simplifying x + -2.333333334 = -2.848001249 Reorder the terms: -2.333333334 + x = -2.848001249 Solving -2.333333334 + x = -2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = -2.848001249 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = -2.848001249 + 2.333333334 x = -2.848001249 + 2.333333334 Combine like terms: -2.848001249 + 2.333333334 = -0.514667915 x = -0.514667915 Simplifying x = -0.514667915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.181334583, -0.514667915}

See similar equations:

| 3+49x=21+39 | | 32z^2-20z-3=0 | | 4k+17+6k=-83 | | 7n-3=5n+13 | | 4g-12=5 | | f(x)=5x^2-30x+6 | | (3x-12)/(4x-16) | | 3/5x15/33 | | 36a-12/12=0 | | 7n-7=5n+13 | | 4p^2-21=0 | | 0=t^3-3t^2-10t+24 | | 10+4h=10 | | 8(s+3)=3 | | 1024x^4-4y^4=0 | | 1.44/1-3/x | | 3/5w=12 | | -4x=7x+6 | | x^2=337 | | (6w-4x-4)(7w-2x-3)= | | 5x-7=-10x+3 | | 7-8x-2=-43+4x-12 | | ln(x)=-1.7 | | a^2-9a-14=0 | | 1.44/1=3/x | | 2(3x+5)=22+5x-3 | | 1.44/1=3x | | (2x)¹/²=8x | | 3x-7=2(4x-1) | | 9-4x=-7x | | 7x-y=24 | | 1.44=3x |

Equations solver categories