3x(x+20)=1

Simple and best practice solution for 3x(x+20)=1 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+20)=1 equation:


Simplifying
3x(x + 20) = 1

Reorder the terms:
3x(20 + x) = 1
(20 * 3x + x * 3x) = 1
(60x + 3x2) = 1

Solving
60x + 3x2 = 1

Solving for variable 'x'.

Reorder the terms:
-1 + 60x + 3x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 60x + 3x2 = 0

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

Divide each side by '3'.
-0.3333333333 + 20x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 20x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 20x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 20x + x2 = 0 + 0.3333333333
20x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
20x + x2 = 0.3333333333

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 0.3333333333 + 100

Reorder the terms:
100 + 20x + x2 = 0.3333333333 + 100

Combine like terms: 0.3333333333 + 100 = 100.3333333333
100 + 20x + x2 = 100.3333333333

Factor a perfect square on the left side:
(x + 10)(x + 10) = 100.3333333333

Calculate the square root of the right side: 10.016652801

Break this problem into two subproblems by setting 
(x + 10) equal to 10.016652801 and -10.016652801.

Subproblem 1

x + 10 = 10.016652801 Simplifying x + 10 = 10.016652801 Reorder the terms: 10 + x = 10.016652801 Solving 10 + x = 10.016652801 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 10.016652801 + -10 Combine like terms: 10 + -10 = 0 0 + x = 10.016652801 + -10 x = 10.016652801 + -10 Combine like terms: 10.016652801 + -10 = 0.016652801 x = 0.016652801 Simplifying x = 0.016652801

Subproblem 2

x + 10 = -10.016652801 Simplifying x + 10 = -10.016652801 Reorder the terms: 10 + x = -10.016652801 Solving 10 + x = -10.016652801 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -10.016652801 + -10 Combine like terms: 10 + -10 = 0 0 + x = -10.016652801 + -10 x = -10.016652801 + -10 Combine like terms: -10.016652801 + -10 = -20.016652801 x = -20.016652801 Simplifying x = -20.016652801

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.016652801, -20.016652801}

See similar equations:

| 5(3x-5)=5-15x | | -2x+5(3x+4)=156 | | 2x(14+10)= | | 4p-10p-p=-150 | | 0=-9+x | | 2.8x-2.9=13.9 | | y=23.5-0.50x | | 3x-6x+6=x-9+15 | | (x+3)(x^3-5x+2)=0 | | M/-15=- | | 3/18-11/18 | | 2x+25=4x+35 | | 5a+8=-6a-4 | | F(x)=(2x+5)(x+3i)(x-3i) | | 17=5k+6 | | -7x+17=-4+2(-7-7x) | | (4x-5y)(7x+3y)=0 | | 6/132 | | y-36=2x^2+22x | | -3+v=13 | | 3.2x-8.3=1.3 | | (11×x)3/4=27 | | -7(4x+2)=3(x+2) | | 2=-7x+2x+7 | | 0=-3y+6+5x | | 3/5x-7/10=2/5 | | 4x(4-6)=8 | | -w^2-3w+18= | | 1/12x6/11 | | 6(y+1)-9=4(y-1)+24 | | 1+5x+3x=1 | | 3x-(7-9)-2x=x+2 |

Equations solver categories