(3x+1)(x+1)-130=0

Simple and best practice solution for (3x+1)(x+1)-130=0 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+1)(x+1)-130=0 equation:


Simplifying
(3x + 1)(x + 1) + -130 = 0

Reorder the terms:
(1 + 3x)(x + 1) + -130 = 0

Reorder the terms:
(1 + 3x)(1 + x) + -130 = 0

Multiply (1 + 3x) * (1 + x)
(1(1 + x) + 3x * (1 + x)) + -130 = 0
((1 * 1 + x * 1) + 3x * (1 + x)) + -130 = 0
((1 + 1x) + 3x * (1 + x)) + -130 = 0
(1 + 1x + (1 * 3x + x * 3x)) + -130 = 0
(1 + 1x + (3x + 3x2)) + -130 = 0

Combine like terms: 1x + 3x = 4x
(1 + 4x + 3x2) + -130 = 0

Reorder the terms:
1 + -130 + 4x + 3x2 = 0

Combine like terms: 1 + -130 = -129
-129 + 4x + 3x2 = 0

Solving
-129 + 4x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-43 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '43' to each side of the equation.
-43 + 1.333333333x + 43 + x2 = 0 + 43

Reorder the terms:
-43 + 43 + 1.333333333x + x2 = 0 + 43

Combine like terms: -43 + 43 = 0
0 + 1.333333333x + x2 = 0 + 43
1.333333333x + x2 = 0 + 43

Combine like terms: 0 + 43 = 43
1.333333333x + x2 = 43

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = 43 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = 43 + 0.4444444442

Combine like terms: 43 + 0.4444444442 = 43.4444444442
0.4444444442 + 1.333333333x + x2 = 43.4444444442

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = 43.4444444442

Calculate the square root of the right side: 6.591239978

Break this problem into two subproblems by setting 
(x + 0.6666666665) equal to 6.591239978 and -6.591239978.

Subproblem 1

x + 0.6666666665 = 6.591239978 Simplifying x + 0.6666666665 = 6.591239978 Reorder the terms: 0.6666666665 + x = 6.591239978 Solving 0.6666666665 + x = 6.591239978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 6.591239978 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 6.591239978 + -0.6666666665 x = 6.591239978 + -0.6666666665 Combine like terms: 6.591239978 + -0.6666666665 = 5.9245733115 x = 5.9245733115 Simplifying x = 5.9245733115

Subproblem 2

x + 0.6666666665 = -6.591239978 Simplifying x + 0.6666666665 = -6.591239978 Reorder the terms: 0.6666666665 + x = -6.591239978 Solving 0.6666666665 + x = -6.591239978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -6.591239978 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -6.591239978 + -0.6666666665 x = -6.591239978 + -0.6666666665 Combine like terms: -6.591239978 + -0.6666666665 = -7.2579066445 x = -7.2579066445 Simplifying x = -7.2579066445

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.9245733115, -7.2579066445}

See similar equations:

| -16.12+x=42.36 | | 3y^3-7y=3y^2+25y | | (144+2x)=(400) | | 4x^3+15=79 | | 11w-2w^2=5 | | 535+4.50n= | | 7(x-2)-5=-3(-7x+7)-8x | | 3m-4n-7+8m+n-6= | | .84=ln(y) | | 41=-22+x | | 11+7m=5m+23 | | 256x^2=25 | | 2x-8=4x+18 | | -8x+12=4(x-6) | | 0.66666666666(x+7)=-1 | | 2k^2+22+60= | | 1.6(2y+15)=-1.2(2y-10) | | -4(x+4)+2x+6=5x+7 | | 8(v+1)=-8v-40 | | 6x^4-30x^3+42x^2= | | 3.1x+2.8z+4.3x-1.2z= | | x-2.5=-8.3 | | 4x+36=-4(x-7) | | 2x^2+10x-12=12 | | 24=16+4x-4 | | 4y=-1X+6 | | 7(u-2)-5u=-10 | | 5x+15=115+65 | | (3x+1)(x+1)=130 | | 6(x-9)+3=6x+6 | | -5x+2(x+5)=34 | | 5(6x-2)=30x-10 |

Equations solver categories