(3x+2)(x)=165

Simple and best practice solution for (3x+2)(x)=165 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)=165 equation:


Simplifying
(3x + 2)(x) = 165

Reorder the terms:
(2 + 3x)(x) = 165

Reorder the terms for easier multiplication:
x(2 + 3x) = 165
(2 * x + 3x * x) = 165
(2x + 3x2) = 165

Solving
2x + 3x2 = 165

Solving for variable 'x'.

Reorder the terms:
-165 + 2x + 3x2 = 165 + -165

Combine like terms: 165 + -165 = 0
-165 + 2x + 3x2 = 0

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

Divide each side by '3'.
-55 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '55' to each side of the equation.
-55 + 0.6666666667x + 55 + x2 = 0 + 55

Reorder the terms:
-55 + 55 + 0.6666666667x + x2 = 0 + 55

Combine like terms: -55 + 55 = 0
0 + 0.6666666667x + x2 = 0 + 55
0.6666666667x + x2 = 0 + 55

Combine like terms: 0 + 55 = 55
0.6666666667x + x2 = 55

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = 55 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = 55 + 0.1111111112

Combine like terms: 55 + 0.1111111112 = 55.1111111112
0.1111111112 + 0.6666666667x + x2 = 55.1111111112

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = 55.1111111112

Calculate the square root of the right side: 7.423685817

Break this problem into two subproblems by setting 
(x + 0.3333333334) equal to 7.423685817 and -7.423685817.

Subproblem 1

x + 0.3333333334 = 7.423685817 Simplifying x + 0.3333333334 = 7.423685817 Reorder the terms: 0.3333333334 + x = 7.423685817 Solving 0.3333333334 + x = 7.423685817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = 7.423685817 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = 7.423685817 + -0.3333333334 x = 7.423685817 + -0.3333333334 Combine like terms: 7.423685817 + -0.3333333334 = 7.0903524836 x = 7.0903524836 Simplifying x = 7.0903524836

Subproblem 2

x + 0.3333333334 = -7.423685817 Simplifying x + 0.3333333334 = -7.423685817 Reorder the terms: 0.3333333334 + x = -7.423685817 Solving 0.3333333334 + x = -7.423685817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = -7.423685817 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = -7.423685817 + -0.3333333334 x = -7.423685817 + -0.3333333334 Combine like terms: -7.423685817 + -0.3333333334 = -7.7570191504 x = -7.7570191504 Simplifying x = -7.7570191504

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.0903524836, -7.7570191504}

See similar equations:

| -3(1-2p)=7+8p | | 3(m+4)-m=-3+8m | | 8x+10=24x+80 | | (-2b^6+3b^4-b^2)-(b^6+2b^4+2b^2)= | | -5x/9-2=-1 | | 7+log(8x)=25-2logx | | 56s^2+23sa-63a^2= | | -10=6v+4v | | -cos^2x+sin^2x=cosx+1 | | 8x+10=26x+80 | | 24+2y=6 | | n+6-6n=-14 | | 36x^2-112x+120=0 | | 1/4(10x-3)=3 | | 6336=88x | | 5x=3(x+4)+2 | | X+18+2x=-5-2x-12 | | 6p^2-21p-45=0 | | log(7)=5x+2 | | 137=58+m | | 4x(x^2+12x+20)=0 | | 4*(-7)-3-2= | | 8a/21 | | 60-6y=6 | | (-6x)=18 | | 1.5(6-8x)=9-(5x+6) | | 7a^2+32=7+40a | | 3x-16=41+8x | | -7u+9=4(u+5) | | 2x^2/(.600-x)^2 | | 12x^3-56x^2+120x=0 | | 3(x-5)=x+4(2x-1) |

Equations solver categories