3(2x+1)x=-8

Simple and best practice solution for 3(2x+1)x=-8 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 3(2x+1)x=-8 equation:


Simplifying
3(2x + 1) * x = -8

Reorder the terms:
3(1 + 2x) * x = -8

Reorder the terms for easier multiplication:
3x(1 + 2x) = -8
(1 * 3x + 2x * 3x) = -8
(3x + 6x2) = -8

Solving
3x + 6x2 = -8

Solving for variable 'x'.

Reorder the terms:
8 + 3x + 6x2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + 3x + 6x2 = 0

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

Divide each side by '6'.
1.333333333 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + 0.5x + -1.333333333 + x2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + 0.5x + x2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + 0.5x + x2 = 0 + -1.333333333
0.5x + x2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
0.5x + x2 = -1.333333333

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -1.333333333 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -1.333333333 + 0.0625

Combine like terms: -1.333333333 + 0.0625 = -1.270833333
0.0625 + 0.5x + x2 = -1.270833333

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -1.270833333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (8x+5)(3x^2-2x+6)= | | sqrt(8-p)-sqrt(p+5)=1 | | 10x+2=20x+4 | | 12=8x-2+10x | | 12=8x-2 | | y=-(2/5)(3y+1/8)-(3/5) | | x-8/3=-10 | | 1/x+7/x=4 | | 3x(x-5)=7xsquare-16x | | -5(z-3)=-6 | | 3d+1=1.3d+7 | | 12=9+12x | | 4x+x+2=16 | | 14=x-17 | | x*.90=612 | | 1/2(x+3)+1/3(x-2)=20/3 | | 1/2(x+3)+1/3(x-2)=62/3 | | 1/2(x+3)+1/3(x-2)=6.2/3 | | 25b^2+10=11 | | 2r^2+2=74 | | 18x+47=18x+47 | | x^2-6x+3forx=7 | | =2(10+g) | | -14x-14=3+x | | 13.5/1.8 | | 8n^2-8=64 | | x+3=-19 | | 13+28y+4y^2=0 | | 8m-11=n | | 5x^4=2560x | | 5b=7c | | y/2-8=10 |

Equations solver categories