(2x^2+4x)+(x^2+8)=

Simple and best practice solution for (2x^2+4x)+(x^2+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 (2x^2+4x)+(x^2+8)= equation: 


Simplifying
(2x2 + 4x) + (x2 + 8) = 0

Reorder the terms:
(4x + 2x2) + (x2 + 8) = 0

Remove parenthesis around (4x + 2x2)
4x + 2x2 + (x2 + 8) = 0

Reorder the terms:
4x + 2x2 + (8 + x2) = 0

Remove parenthesis around (8 + x2)
4x + 2x2 + 8 + x2 = 0

Reorder the terms:
8 + 4x + 2x2 + x2 = 0

Combine like terms: 2x2 + x2 = 3x2
8 + 4x + 3x2 = 0

Solving
8 + 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'.
2.666666667 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + 1.333333333x + -2.666666667 + x2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + 1.333333333x + x2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + 1.333333333x + x2 = 0 + -2.666666667
1.333333333x + x2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
1.333333333x + x2 = -2.666666667

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 = -2.666666667 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = -2.666666667 + 0.4444444442

Combine like terms: -2.666666667 + 0.4444444442 = -2.2222222228
0.4444444442 + 1.333333333x + x2 = -2.2222222228

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = -2.2222222228

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2x=xy | | 200=.25 | | -18=-(3x-18)+2x | | -2(x+2)=-2x | | 1.1+8.50x=2.50+2.25 | | p-4+6p= | | 110=-2(1+8n) | | 1.1+8.50=2.50+2.25 | | 325=.3x^(3/4) | | 4x+3=8x-29 | | -7(6r+2)-6= | | P-0.60=32 | | 1-3h=13/3 | | Loge(x+3)-loge(x+1)=2 | | 4j+8-3=92 | | Solvex^2+6x+8=0 | | (X-4)2=-5 | | x^4+x^3+6x^2+6x=0 | | y+30=14-3y | | 2/3=(5-3x)/(-2)=3/4 | | -4b-15=-(b-3) | | 1.1[8.50+x]=2.50+2.25 | | In(x+3)-in(x+1)=2 | | 2/3b1/3 | | (-3/5)(-3/5)(-3/5)(-3/5)(-3/5) | | 1-2r-3r=1 | | .6x+11=5 | | 1-2r-3r=q | | y=-1/10x | | 1+6m-m=-4 | | 8.50=2.50+2.25 | | pf+4-7f=8 |

Equations solver categories